The mass of a melted candle will not change after it has been melted.
The mass of a melted candleThis is an example of a physical change, where the form of the candle has changed but it is still made up of the same elements and compounds.On the other hand, the mass of a burned candle will change, as the candle is no longer made of the same elements and compounds.This is an example of a chemical change, where new substances are formed from the original elements and compounds.Both physical and chemical changes can be affected by light and temperature.For example, when a candle is exposed to heat and light, the temperature of the candle increases and the candle will begin to melt.This is a physical change that is affected by light and temperature.Similarly, when a candle is exposed to heat and light, the temperature of the candle increases and the candle will begin to burn.This is a chemical change that is affected by light and temperature, as the burning of the candle creates new substances such as smoke and ash.To learn more about The mass of a melted candle refer to:
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The following data was collected when a reaction was performed experimentally in the laboratory.
Determine the maximum amount of Fe that was produced during the experiment. Explain how you determined this amount. (5 points)
(WILL GIVE BRAINLIEST NEED ASAP)
the maximum amount of Fe that could be produced is 2 moles for the product if reactants Fe2O3 Al2O3
The maximum amount of Fe that was produced during the experiment can be determined by using the balanced equation of the reaction.
Fe2O3 + 2Al -> 2Fe + Al2O3
From the information given, we know that 3 moles of Fe2O3 and 5 moles of Al were used in the reaction. By using the stoichiometry of the reaction, we can determine the maximum amount of Fe that could be produced.
For every 3 moles of Fe2O3 that reacts, 2 moles of Fe are produced.
So the maximum amount of Fe that could be produced is 2 moles.
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The complete question is:
When a reaction was performed experimentally in the laboratory, the following data was collected.
Products of Reactants
Fe2O3 Al2O3 Fe 3 moles 5 moles?
Calculate the maximum amount of Fe produced during the experiment. Explain how you arrived at this figure.
if the pipe is filled with helium at the same temperature, what fundamental frequency fhe will it produce? take the molar mass of air to be 28.8 g/mol and the molar mass of helium to be 4.00 g/mol . express your answer in hertz.
The fundamental frequency of sound in helium if the pipe is filled with it at the same temperature will be 766.13 Hertz.
A certain organ pipe which is open at both the ends, produces a fundamental frequency equal to 285 Hz in air. It can be considered that the length of the pipe is L. Its wavelength will be represented as:
λ = 2L -- (eq 1)
The frequency of sound will be given as
f = v / λ, where f is the frequency, v is the velocity of sound in air and λ is the wavelength. Replacing the value of λ from equation 1.
285 = 331.29/ 2L
L = 0.5812 m
Let us assume that v' is the velocity of sound in helium. Then,
v/v' = [tex]\sqrt{m'}[/tex]/[tex]\sqrt{m}[/tex] , where, m is the molar mass of air and m' is the molar mass of helium.
v' = 331.29/ 0.372
v' = 890.56 m/s
To calculate the fundamental frequency of sound is helium,
f' = v' / λ
f' = 890.56 / 2 × 0.5812
f' = 766.13 hertz
So, the fundamental frequency of sound is helium is 766.13 hertz.
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in pea plants, round (r) is dominant to wrinkled (r) a heterozygous female is crossed with wrinkled male.Make a punnett square to determine the possible offspring.
a.What are the possible genotype of the offspring?
b.What are the possible phenotypes of the offspring?
c.What is the probability of having an offspring that is round?
d.What is the probability of having an offspring that is homozygous?
a. Possible genotypes are Rr and rr.
b. Possible phenotypes are round and wrinkled.
c. The probability of having an offspring that is round is 50%
d. The probability of having an offspring that is homozygous is 50%.
Monohybrid crossingRound (R) is dominant to wrinkled (r). Recall that genotypes refer to the genetic composition of a trait while phenotypes refer to the physical expression of a trait.
Genotype of a heterozygous female = Rr
Genotype of a wrinkled male = rr
We are to cross Rr with rr:
Rr x rr
Rr Rr rr rr
Possible genotype of the offspring: Rr and rrPossible phenotypes of the offspring: round and wrinkledProbability of having an osspring that is round = 1/2 or 50%Probability of having an offspring that is homozygous = 1/2 or 50%More on monohybrid crossing can be found here: https://brainly.com/question/15314052
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What are three component of cell theory?
what is the standard temperature and pressure (stp) as defined by the international union of pure and applied chemistry (iupac)?
Answer:
Temperature: 0 degrees Celsius (273.15 degrees Kelvin or 32 degrees Fahrenheit) Pressure: 1 atm (101.325 kilopascal or 760 Torr).
Explanation:
f the actual yield of the reaction was 25 % instead of 100 % , how many molecules of no would be present after the reaction was over?
If the actual yield of the reaction was 25 % rather than 100 % , then the number of molecules of O2 present after the reaction was over would be 1 molecules.
The limiting reactant is the reactant that runs out first and determines the theoretical yield of the reaction. In this case, NO is the limiting reactant.
To calculate the theoretical yield of O2, we need to know the molar ratio of O2 to NO2 in the balanced chemical equation. If 8 molecules of NO2 are produced, we can use the balanced equation to determine the number of molecules of O2 that should be produced.
2NO + O2 -> 2NO2
We know that for every 2 molecules of NO, 1 molecule of O2 is consumed and 2 molecules of NO2 are produced.
Therefore, if 8 molecules of NO2 are produced, the number of O2 that should be produced is:
8 molecules NO2 / 2 = 4 molecules O2
If the actual yield of the reaction is 25% instead of 100%, we can calculate the actual yield of O2 by multiplying the theoretical yield by the percentage yield:
4 molecules O2 * 25% = 1 molecule O2
So, if the actual yield of the reaction is 25% instead of 100%, then 1 molecule of O2 would be present after the reaction is over.
"
Complete question
If the actual yield of the reaction was 75% instead of 100%, how many molecules of O2 would be present after the reaction is over? The# of No2 molecules is 8 if it goes through completion and NO is the limiting reactant.
"
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Cleaner fish feed on parasites in a shark's mouth and gills. This benefits the cleaner fish because they get a meal. This benefits the shark because it gets rid of parasites. Which of the following best describes the relationship between the cleaner fish and the shark?
The relationship between the cleaner fish and the shark is a form of mutualism.
The correct option is C.
What is mutualism in living organisms?Mutualism is a partnership in which both species gain from one another. This connection might exist between two species or within a single species. Symbionts are the species with this association.
Mutualism is a sort of interaction in which neither the host nor the symbiont suffers any negative effects. The duration of this partnership could be either longer or shorter. The word "mutualist" denotes that the host and the tiny partner are the other participants involved in the mutualism.
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Complete question:
Cleaner fish feed on parasites in a shark's mouth and gills. This benefits the cleaner fish because they get a meal. This benefits the shark because it gets rid of parasites. Which of the following best describes the relationship between the cleaner fish and the shark?
a. parasitism
b. mutualism
c. commensalism
d. predation
How many molecules of CO2 are produced from 88. 62 g of C6H12O6?
Please show work, I am confused on how to set it up!
One mole or 180 g of C₆H₁₂O₆ produces 6 moles or 264 g of CO₂. Then., 88.62 g of the reactant will produce 129 g of CO₂ corresponds to 2.9 moles.
What is cellular respiration ?In cellular respiration process of plants plants consume oxygen to convert glucose into carbon dioxide and water as written in the reaction below:
[tex]\rm C_{6}H_{12}O_{16} + 6O_{2} \rightarrow 6CO_{2} + 6H_{2}O[/tex]
As per this balanced chemical equation, one mole of C₆H₁₂O₆ produces 6 moles of carbon dioxide.
Molar mass of C₆H₁₂O₆ = 180 g/mol
molar mass of CO₂ = 44 g.
mass of 6 CO₂ = 264 g.
Then, mass of CO₂ produced by 88.62 g of glucose is calculated as follows:
(88.62 ×264)/180 = 129.9 g.
No.of moles in 129 g = 129 /44 = 2.9 moles.
Therefore, the number of moles of CO₂ produced is 2.9 moles.
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Use this equation for the following problems: ___Al(NO3)3 + ___MgBr2 → 3Mg(NO3)2 + 2AlBr3
a. Find the number of moles Al(NO3)3 used to produce 2.5 moles of Mg(NO3)2
b. Find the number of moles Al(NO3)3 used to produce 0.78 moles of AlBr3.
c. Find the number of moles MgBr2 that reacts with 1.5 moles of Al(NO3)3.
From the balanced reaction, it is clear that, 2 moles of Al (NO₃)₃ give 3 moles of Mg(NO₃)₂ . Then, 2.5 moles of Mg(NO₃)₂ is produced by 1.6 moles of Al (NO₃)₃.
What is balanced reaction?In the balanced chemical equation of a reaction, all the reactants and products are in prefect stoichiometric ratios.
The given reaction can be balanced as:
[tex]\rm 2 Al(NO3)_{3} + 2MgBr_{2} \rightarrow 3Mg(NO3)_{2} + 2AlBr_{3}[/tex]
As per the given reaction, 2 moles of Al (NO₃)₃ gives 3 moles of Mg(NO₃)₂. Then, number of moles of Al (NO₃)₃ which produce 2.5 moles of Mg(NO₃)₂ is
(2.5 ×2)/ 3 = 1.6 moles.
Similarly, 2 moles of Al (NO₃)₃ gives 2 moles of AlBr₃. Then 0.78 moles of Al (NO₃)₃ is required to give 0.78 moles of the product.
2 moles of Al (NO₃)₃ reacts with 3 moles of Mg Br₂ .Therefore, 2.25 moles of Mg Br₂ is needed to react with 1.5 moles of Al (NO₃)₃.
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marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. find the percent yield of carbon dioxide if 126.1 g is collected when 372.7 g of marble reacts. hint: write a balanced chemical equation.
The percent yield of carbon dioxide if 126.1 g is collected when 372.7 g of marble reacts is 76.9 %
The reaction is given as :
CaCO₃ + 2HCl -----> CaCl₂ + H₂O + CO₂
The mass of carbon dioxide = 126.1 g
The mass of the calcium carbonate = 372.7 g
The moles of calcium carbonate = mass / molar mass
= 372.7 / 100
= 3.727 mol
1 mole of CaCO₃ produces 1 mole CO₂
Moles CO₂ = 3.727 mol
The mass of CO₂ = moles × molar mass
= 3.727 × 44
= 163.98 g
The percent yield of carbon dioxide = ( 126.1 / 163.98 ) × 100 %
= 76.9 %
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Put the following elements into 5 pairs of elements that have similar chemical reactivity : F,Sr,P,Ca,O,Br,Rb,Sb,Li,S
please help I'm failing
The 5 pairs of the elements that have the similar chemical reactivity are :F and Br, Sr and Ca, P and Sb, O and S, Li and Rb.
1) The Fluorine F and Bromine Br are elements are from the halogen family. They are highly electronegative and exhibit similar reactivity.
2) Sr and Ca are belongs to alkaline earth metals. They are found in group II. Their oxidation state is +2.
3) P and Sb are belongs to the group 5 of the periodic table and they have the some similar chemical reactivity.
4) O and S are both nonmetals and they can be found in the group 6 with -2 oxidation state.
5) Li and Rb are belongs to the alkali metals, they form ionic bonds with the halogen family.
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Sulfur dioxide reacts with oxygen to produce sulfur trioxide. Write the equation. Identify the limiting reagent when 20.0 g of SO2 react with 15.6 g of O2.
Sulfur dioxide reacts with oxygen to produce sulfur trioxide the equation is 2SO₂ + O2 → 2SO₃ and SO₂ is the limiting reagent.
What is a limiting reagent?The limiting reagent is the reactant that regulates how much of the products are produced during a chemical reaction. It is occasionally found that there are too many of the other reactants present in the reactions because some of them persist after the limiting reagent has been entirely utilized.
20.0g SO₂ X 1 mol SO₂ / 64.066g SO₂ X 1 mol O₂ / 2 mol SO₂ X 32g O₂ / 1 mol O₂ = 4.99g O₂
Therefore, SO₂ is the limiting reagent due to only 4.99g O₂ would react with the 20g SO₂ given.
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Which power source uses the rotation of giant magnets to create electricity,
which is then directed to the electric outlets in people's homes?
OA. An electric motor
B. An electric battery
OC. An electric generator
OD. Electromagnetism
SUBMIT
An electric generator uses the rotation of giant magnets to create electricity, Therefore option C is the correct answer.
An electric generator is a widely used electronic device which is used in many types of power plants like hydro power plant, thermo nuclear power plant, etc. The generator converts the kinetic energy into electrical energy using electromagnetism. The electricity created by the generator is then sent to electrical outlets in people's households via power lines and poles.
The generator has a rectangular electromagnetic coil which rotates between the poles of a permanent magnet. When the coil is moved using kinetic energy (for example : high flow of water or steam), it creates an induced electric current in the coil due to the change in Magnetic flux, ultimately generating electricity.
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how much heat energy (in kj) will be absorbed or released if 8.33 grams of ammonia is produced? state whether the energy will be absorbed or released.
To calculate the number of moles- n = 8.33 g NH3 / 17.03 g/mol = 0.49 mol
Now, we can calculate the heat energy absorbed-
q = n * ΔH
q = 0.49 mol * (-46.19 kJ/mol) = -22.5 kJ.
The heat energy absorbed or released by the reaction of 8.33 g of NH3 is -22.5 kJ.
What do you mean by heat energy?Heat energy is the result of the motion of tiny particles called atoms, molecules or ions. Heat energy can be repositioned from one object to another. The transfer or flow due to the disparity in temperature between the two objects is called heat.
What are different types of heat energy?The different types of Heat Energy are- radiation, conduction and convection.
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How many moles of CO2 are formed?
The number of moles of CO2 formed from the reaction would be 50 moles.
Stoichiometric problemThe reaction has to do with the combustion reaction of ethyne in oxygen to form carbon dioxide and water. From the balanced equation of the reaction below:
2C2H2(g) + 5O2(g) ==> 4CO2(g) + 2H2O(g)
The mole ratio of C2H2 to CO2 is 1:2. This means for every 1 mole of C2H2 that burns in adequate oxygen, 2 moles of CO2 will be produced.
Using this established mole ratio, the number of moles of CO2 that will be formed from 25.0 moles of C2H2 would be:
1 mole C2H2 = 2 moles CO2
25 moles C2H2 = 25x2/1
= 50 moles CO2
In other words, the number of moles of CO2 that will be formed from 25.0 moles of C2H2 is 50 moles.
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how many moles of CO2 are formed from 25.0 moles C2H2
2C2H2(g) + 5O2(g) ==> 4CO2(g) + 2H2O(g)
you wish to make a 0.286 m hydrochloric acid solution from a stock solution of 3.00 m hydrochloric acid. how much concentrated acid must you add to obtain a total volume of 50.0 ml of the dilute solution?
It will require 5 ml of concentrated acid to obtain a total volume of 50.0 ml of the dilute solution
formula for dilution calculations, which is :C₁V₁ = C₂V₂,
where C₁ is the concentration of the concentrated acid,
V₁ is the volume of the concentrated acid,
C₂ is the concentration of the dilute acid, and
V₂ is the final volume of the dilute acid,
The formula values are as follows:
V₁ = (C₂V₂)/C₁ V₁
= (0.286 M × 0.05 L)/3.00 M V₁
= 0.005 L = 5 ml
Therefore, 5 ml of concentrated acid will be required to produce a total volume of 50.0 ml of the diluted solution.
What kinds of dilution exist?A common method for achieving this concentration reduction is serial dilution. The rate at which a gas becomes diluted can be determined using the dilution equation. A type of illegal trademark use outside of the relevant market is known as trademark dilution.
What does the dilution procedure do?The reference for antimicrobial susceptibility testing is the dilution process, which is used to demarcate the minimal inhibitory concentration of an antimicrobial to inhibit or kill bacteria or fungi.
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Is copper (II) chloride an element, a heterogeneous mixture, a compound, or a homogeneous mixture?
Select one:
a. Element.
b. Heterogeneous mixture.
c. Compound.
d. Homogeneous mixture.
Answer: B a heterogeneous mixture
Explanation:
ammonia gas reacts with aqueous nitric acid to form aqueous ammonium nitrate, a fertilizer. (a) write the balanced chemical equation for the reaction, including the physical states
The balanced chemical equation for the reaction of ammonia gas (NH3) with aqueous nitric acid (HNO3) to form aqueous ammonium nitrate (NH4NO3) is: NH3(gas) + HNO3(aqueous) → NH4NO3(aqueous)
The reaction of ammonia gas with aqueous nitric acid results in the formation of aqueous ammonium nitrate. Ammonia gas is represented by the chemical formula NH3 and is a gas at room temperature and pressure. Nitric acid is represented by the chemical formula HNO3 and is an aqueous solution at room temperature and pressure.
Ammonium nitrate is represented by the chemical formula NH4NO3 and is also an aqueous solution at room temperature and pressure. The balanced chemical equation for the reaction is:
NH3 (g) + HNO3 (aq) -> NH4NO3 (aq)
Which means that one molecule of ammonia reacts with one molecule of nitric acid to form one molecule of ammonium nitrate. This reaction is exothermic and releases heat. Ammonium nitrate is widely used as a fertilizer.
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Bella is writing a research paper on ocean currents. Which two sources should she consult?
Articles published by universities or government agencies. 3. Article published in 2015 and updated a research week ago.
Which two sources should she consult?When it comes to digging deeper into scientific research, books and scientific journals are usually your best bet. Academic journals are often the best place to find reliable and authoritative content and are considered one of the most authoritative sources to use when writing academic papers.Most studies use both primary and secondary sources. They complement each other and help build a compelling argument. Primary sources are more reliable as evidence, while secondary sources show how your research relates to existing research. Books provide more detailed information than encyclopedias or websites. It is written by authors selected by publishers for their expertise and is therefore a reliable source of information. Information is also checked by other experts and editors before publication.To learn more about research from the given link:
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how many of the stable, monatomic ion formed by sodium are required to form an ionic compound with the chromate ion?
One sodium ion is required to form an ionic compound with one chromate ion, the chemical formula is NaCrO4 .
Ionic compounds are formed when positively charged ions (cations) and negatively charged ions (anions) come together in a ratio that results in a neutral overall charge.
In this case, the chromate ion (CrO4²⁻) has a 2- charge, meaning it needs two positive charges to balance it out and form a neutral compound. Sodium (Na+) is a monatomic cation with a 1+ charge, so one sodium ion is required to balance the charge of one chromate ion.
The chemical formula for this ionic compound is NaCrO4. It's important to note that the ratio of cations to anions in an ionic compound is not always a 1:1 ratio, it can also be 2:1, 3:2 and so on.
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What will most likely happen when two bromine atoms bond together?
The atoms will become less stable.
An ionic bond will hold them together.
A covalent bond will hold them together.
A metallic bond will hold them together.
a sample of bismuth weighing 0.687 g was converted to bismuth chloride by reacting it first with hno3, and then with hcl, followed by careful evaporation to dryness. the mass of the bismuth chloride obtained was 1.032 g. what is the empirical formula of bismuth chloride? you won't be able to make the numbers a subscript. for instance, for mgcl2 enter mgcl2.
The empirical formula of bismuth chloride is Bi1 Cl8.9.The empirical formula of a compound is the simplest ratio of the atoms in the compound.
To determine the empirical formula of bismuth chloride, we need to determine the number of moles of each element present in the compound. First, we can find the number of moles of bismuth present in the sample by dividing the mass of the sample (0.687 g) by the molar mass of bismuth (208.98 g/mol): 0.687 g / 208.98 g/mol = 0.00327 mol .Next, we can find the number of moles of chlorine present in the compound by dividing the mass of the bismuth chloride obtained (1.032 g) by the molar mass of chlorine (35.45 g/mol): 1.032 g / 35.45 g/mol = 0.029 mol. To find the ratio of the atoms in the compound, we divide the number of moles of each element by the smallest number of moles calculated:0.00327 mol / 0.00327 mol = 1 (Bismuth) 0.029 mol / 0.00327 mol = 8.9 (Chlorine)Therefore, the empirical formula of bismuth chloride is Bi1 Cl8.9.
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If you performed the Kastle-Meyer test on potatoes, beets or horseradish, you would also get a positive pink reaction, although no blood is present. How would you account for these vegetables producing a positive reaction when no blood is present
The Kastle-Meyer test is a presumptive test for blood, which uses the enzyme peroxidase to catalyze a reaction between hydrogen peroxide and a substrate called phenolphthalein, producing a pink colour.
The Kastle-Meyer test is based on the presence of peroxidase enzymes found in many plants, including potatoes, beets, and horseradish. These enzymes catalyze the oxidation of phenolphthalein, the indicator used in the Kastle-Meyer test, producing pink colour.
This is why these vegetables can produce a positive reaction even though no blood is present. It is important to note that this test is not specific for blood and should not be used as the sole evidence for the presence of blood in a sample.
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a chain of amino acids is coiled around and around in the shape of a spring. this is most strongly an example of:
A chain of amino acids that is coiled around and around in the shape of a spring is an example of secondary structure.
Secondary structure in proteins is the arrangement of amino acids in a chain that is coiled into a spring-like shape. This structure is important for proteins to function properly and can be altered by various factors, such as temperature and pH levels.
By understanding the secondary structure of a protein, researchers can better understand the protein's function and potential applications.
Amino acids, the building blocks of proteins, can form complex structures in the cell. One of these structures, known as secondary structure, is a coiled chain of amino acids that resembles a spring in shape.
This structure is an important part of the overall structure of a protein, as it contributes to its stability and function. Secondary structure is essential for proteins to perform their biological roles in the body.
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PLEASE HURRYYY THIS IS A TEST AND I HAVE LIMITED TIME!!! *ILL GIVE BRAINLIEST*
Question- How many moles are there in 5.11 x 1024 atoms of palladium?
The moles that are there in 5.11 x [tex]{10}^2^4[/tex] atoms of palladium are approximately 8.48 moles of palladium, and it is obtained by dividing the palladium with Avogadro's number, which is 6.022 x [tex]{10}^2^3[/tex] atoms/mol.
What is the significance of the moles?
The moles that are present in the substance can be calculated by dividing the Avogadro's number with the gram of palladium, and the calculation is given below.
=5.11 x [tex]{10}^2^4[/tex] atoms / 6.022 x [tex]{10}^2^3[/tex] atoms/mol
= 8.48
Hence, the moles that are there in 5.11 x [tex]{10}^2^4[/tex] atoms of palladium are approximately 8.48 moles of palladium, and it is obtained by dividing the palladium with Avogadro's number, which is 6.022 x [tex]{10}^2^3[/tex] atoms/mol.
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When 2. 00 mol of SO2Cl2 is placed in a 2. 00-L flask at 303 K, 56% of the SO2Cl2 decomposes to SO2 and Cl2. Calculate Kc for this reaction at this temperature
At 303 K, 56% of the SO2Cl2 in a 2.00 mol flask of SO2Cl2 dissolves into SO2 and Cl2. At this temperature of 303 K, the Kc for this reaction is 1.58.
The decomposition of SO2Cl2 to SO2 and Cl2 is a reversible reaction. The equation for the reaction is:
SO2Cl2(g) <==> SO2(g) + Cl2(g)
We know that 56% of the SO2Cl2 has decomposed, so we can assume that the equilibrium constant, Kc, is less than 1. To calculate Kc, we will use the equilibrium concentrations of the reactants and products.
We know that the initial concentration of SO2Cl2 is 2.00 mol/2.00 L = 1.00 M, and that 56% of the SO2Cl2 has decomposed, so the equilibrium concentration of SO2Cl2 is 1.00 M * 0.44 = 0.44 M
The equilibrium concentrations of SO2 and Cl2 can be calculated by assuming that they are produced in equal amounts, so the equilibrium concentration of each will be 0.56 M (0.56 mol/L)
Kc is defined as the concentration of products raised to the power of their stoichiometric coefficients, divided by the concentration of reactants raised to the power of their stoichiometric coefficients.
Kc = [SO2][Cl2] / [SO2Cl2]^2
Kc = (0.56 M)^2 / (0.44 M) = 1.58
So the Kc for this reaction at 303 K is 1.58
It's worth noting that equilibrium constant, Kc, is not a constant but a function of temperature, concentration and pressure. The value of Kc for a reaction is different at different temperatures, pressures, etc.
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HELP ME PLEASEEE!!! IM NOT SURE WHAT TO DO BRO
During the reaction, two moles of potassium chlorate are converted into two moles of potassium chloride and three moles of oxygen.
How many moles are there in O2?One mole of oxygen gas, with the formula O2, weighs 32 g and includes 6.02 x 1023 molecules of oxygen, but also contains 12.04 x 1023 (2 x 6.02 x 1023) atoms of oxygen, since each molecule of oxygen contains two oxygen atoms.In order to make so much oxygen, you would require 33.3 moles of potassium chlorate, or KClO3. You should also note that you have a 2:3 ratio.During the reaction, two moles of potassium chlorate are converted into two moles of potassium chloride and three moles of oxygen.During the reaction, two moles of potassium chlorate are converted into two moles of potassium chloride and three moles of oxygen.To learn more about moles refer to:
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How many electrons are exchanged when this reaction is balanced? mn(s) + cr3 (aq) → mn2 (aq) + cr(s)
We must take into account the quantity of electrons exchanged in order to balance this redox reaction. Manganese (Mn) undergoes a shift in oxidation state from 0 (in the solid form) to +2.
(in the aqueous state). This indicates that during the process, Mn loses two electrons. Chromium (Cr) goes from +3 (in the aqueous state) to 0 in terms of oxidation state (in the solid state). This indicates that throughout the process, Cr gains 3 electrons. Equal to the amount of electrons that Cr obtains, Mn loses the same number of electrons. Consequently, the following is the balanced equation for this reaction: 2Mn2+(aq) + 3Cr = 2Mn(s) + 3Cr3+(aq) (s) In this balanced equation, this reaction involves the exchange of two electrons.We must take into account the quantity of electrons exchanged in order to balance this redox reaction. Manganese (Mn) undergoes a shift in oxidation state from 0 (in the solid form) to +2.
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Water is kept in a vessel at a temperature of 30°C. What would happen if a hot metal ball having a temperature of 70°C is dropped in it. Mention the heat flow. Give reasons
:
Answer:As the ball is at 70 degree celsius and the water is at 30 degree celsius, the heat flow will take place from the hot metal ball towards the water which is at low temperature.
Explanation:
Therefore, there will be a decrease in the temperature of the metal ball.
Chelsea went camping for one week. Each night she saw the moon and noticed that the moon seemed to be getting larger. Which kind of moon was she
seeing?
O Full moon
O Waning Moon
O Waxing Moon
The type of moon that Chelsea was seeing is full moon (option A).
What is the moon?The moon is any natural satellite of a planet. It is defined to be a celestial body that makes an orbit around a planet, including the eight major planets, dwarf planets, and minor planets.
The eight phases of the moon are as follows;
new moonwaxing crescentfirst quarterwaxing gibbousfull moonwaning gibbousthird quarterwaning crescentAccording to this question, Chelsea went camping for one week. Each night she saw the moon and noticed that the moon seemed to be getting larger.
It can be said that Chelsea is seeing the full moon.
Learn more about moon at: https://brainly.com/question/13538936
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