Answer:
c.carbon C and sulfur S
Explanation:
What type of bond would be expected between Mg and Ti?
A.hydrogen bond
Bionic bond
C.covalent bond
D.metallic bond
The diagram above shows a simple electric circuit. Which of the following statements describes the function of the battery?
a. It reduces the flowlof electrons
b. It transmits light through the circuit It pushes electrons
c. through the circuit
d. It releases light during a chemical reaction
In the electronic circuit, the function of battery is to push the electrons through the circuit.
What is electronic circuit?
An electronic circuit comprises of individual electronic components like resistors, diodes,transistors , capacitors,etc. which are connected to each other by means of wires through which electric current flows.It can also be referred to as an electronic circuit.
It usually comprises of at least one active component . The combination of wires and simple and complex components allows operations to be performed, amplification of signals, displacement of data and performing of computations.
There are three types of circuits , an analog circuit ,a digital circuit and a mixed circuit which is combination of digital and analog circuits , even semiconductors are used in circuits.
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What volume. In liters, of H2O(g) measured at STP is produced by the combustion of 15.63 g of natural gas (CH4) according to the following equation? CHale) +20269) CO2 + 2H2008)
Answer:
V = 43.95 L
Explanation:
Given data:
Mass of CH₄ decomposed = 15.63 g
Volume of H₂O produced at STP = ?
Solution:
Chemical equation:
CH₄ + 2O₂ → 2H₂O + CO₂
Number of moles of CH₄:
Number of moles = mass/molar mass
Number of moles = 15.63 g/ 16 g/mol
Number of moles = 0.98 mol
Now we will compare the moles of H₂O with CH₄.
CH₄ : H₂O
1 : 2
0.98 : 2×0.98 = 1.96 mol
Volume of hydrogen:
PV = nRT
1 atm × V = 1.96 mol × 0.0821 atm.L/mol.K × 273.15 K
V = 43.95atm.L / 1atm
V = 43.95 L
Why do gases diffuse more quickly than liquids?
Choose the correct answer.
A) Liquids can be compressed easily.
B)The particles in gases are not mobile.
C)Liquids are always at lower temperatures than gases.
D)Gas particles move rapidly and have space between them.
Answer:
D)Gas particles move rapidly and have space between them.
Explanation:
Matter exists in three states namely: solids, liquids and gases. The particles contained in these three states are different from one another. In the gaseous state, the particles are FAR APART from one another i.e. space exists and they move at a very fast rate in contrast to the particles of a liquid, which have less space and move slower.
This rapid movement of gas particles within a less restricted space accounts for the reason why gaseous substances DIFFUSE more quickly than liquids.
Which temperature is warmest
A. 0°C
B. 273 K
C. 32°F
D. 30°C
Answer:
your answer should be B.273 K
Explanation:
In metallic bonds, the mobile electrons surrounding the positive ions are called a(n)
TRUE OR FALSE? Alloys are used more than pure metals because they are generally softer and less likely to react with air or water.
Alloys are used much more than pure metals because they are generally stronger and less likely to react with air or water...
So I would say false
Even though the molecular formula of acetylene is C2H2, and that of benzene is C6H6, these compounds have the same percent composition and therefore the same empirical formula. What is their empirical formula?
Answer:
CH
Explanation:
The empirical formular is the simplest formular of a compound. It shows the relative number of elements present in a compounds. It shows the number of atoms of elements present in simple ratios.
In both compounds, the ratio of the carbon to hydrogen s 1:1
In C2H2;
C : H = 2 : 2 (Which is equivalent to 1 : 1)
In C6H6;
C : H = 6 : 6 (Which is equivalent to 1 : 1)
This means the empirical formular is CH
Can you solve this
A mystery element "X” has two stable isotopes X-50 which occurs 40% of the time
and X-60 which occurs 60% of the time. What is the average mass of element "X"?
A-50 amu
B-54 amu
C-56 amu
D-60 amu
Answer:
probaly C
Explanation:
I'm not sure on this one...
Order the relative rate of diffusion of the following gases from slowest to fastest
Answer:
Kr, Ar, Ne, N
Explanation:
Hope this helps
What total volume of ozone measured at a pressure of 24.5 mmHg and a temperature of 232 K can be destroyed when all of the chlorine from 15.5 g of CF3Cl goes through 10 cycles of these reactions
Answer:
[tex]1.75272\ \text{m}^3[/tex]
Explanation:
The breakdown reaction of ozone is as follows
[tex]CF_3Cl + UV \rightarrow CF_3 + Cl[/tex]
[tex]Cl + O_3 \rightarrow ClO + O_2[/tex]
[tex]O_3 + UV \rightarrow O_2 + O[/tex]
[tex]ClO + O \rightarrow Cl + O_2[/tex]
It can be seen that 2 moles of ozone is required in the complete cycle
So for 10 cycles, 20 moles of ozone is required
m = Mass of [tex]CF_3Cl[/tex] = 15.5 g
M = Molar mass of [tex]CF_3Cl[/tex] = 104.46 g/mol
P = Pressure = 24.5 mmHg
T = Temperature = 232 K
R = Gas constant = [tex]62.363\ \text{L mmHg/K mol}[/tex]
Number of moles is given by
[tex]n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{15.5}{104.46}\\\Rightarrow n=0.1484\ \text{moles}[/tex]
[tex]20\ \text{moles} = 20\times 0.1484 = 2.968\ \text{moles}[/tex]
From ideal gas law we have
[tex]PV=nRT\\\Rightarrow V=\dfrac{nRT}{P}\\\Rightarrow V=\dfrac{2.968\times 62.363\times 232}{24.5}\\\Rightarrow V=1752.72\ \text{L}=1.75272\ \text{m}^3[/tex]
For 20 cycles of the reaction the volume of the ozone is [tex]1.75272\ \text{m}^3[/tex].
The Total volume of Ozone measured is = 1.7527 m³
Given data :
Mass of CF₃Cl = 15.5 g
Molar mass of CF₃Cl = 104.46 g/mol
Pressure ( P ) = 24.5 mmHg
T = 232 K
Gas constant ( R ) = 62.363 L mmHg/K mol
Note : For a complete ozone cycle 2 moles of ozone is required therefore for 10 cycles 20 moles of ozone will be required
First step : Determine number of moles in each cycle reaction
n = m / M ----- ( 1 )
m = mass = 15.5 g
M = molar mass = 104.46 g/mol
∴ n = 15.5 / 104.46 = 0.1484
Hence the number of moles in 10 cycle = 20 * 0.1484 = 2.968 moles
Next step : Apply Ideal gas law to determine the volume of Ozone
PV = nRT ----- ( 2 )
n = 2.968
V = ?
R = 62.363 L mmHg/K mol
T = 232 K
P = 24.5 mmHg
∴ V = nRT / P --- ( 3 )
= ( 2.968 * 62.363 * 232 ) / 24.5
= 1752.72 L ≈ 1.7527 m³
Hence we can conclude that the Total volume of Ozone measured is = 1.7527 m³
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НО-ОН
what is the reaction to show the bond cleavage
Answer:
Fast and slow free-radical recombination reactions in thermal breakdown. As thermally induced bond-cleavage reactions and the depolymerisation of coals accelerate above 350–375°C, the more reactive of the free radicals have greater potential to undergo either retrogressive or quenching (cappin
Explanation:
What is the concentration of silver ions in a saturated solution of Ag3PO4? Ksp (Ag3PO4) = 8.9 x 10−17.
Answer:
4.3x10⁻⁵ mol/L.
Explanation:
Hello there!
In this case, since the dissolution of silver phosphate is not completely achieved due to its low solubility in water, we can represent this as an equilibrium problem by which it separates into silver and phosphate ions:
[tex]Ag_3PO_4(s)\rightleftharpoons 3Ag^+(aq)+PO_4^{3-}(aq)[/tex]
Which are slightly soluble in water; it means that the equilibrium expression is:
[tex]Ksp=[Ag^+]^3[PO_4^{3-}][/tex]
Thus, since we know the solubility product and the concentration of these ions in a saturated solution is represented by the reaction extent [tex]x[/tex], we can write:
[tex]8.9x10^{-17}=(3x)^3(x)[/tex]
Thus, solving for [tex]x[/tex] we obtain:
[tex]x=\sqrt[4]{\frac{8.9x10^{-17}}{27} } \\\\x=4.3x10^{-5}M[/tex]
Thus, the molar concentration of silver ions is 4.3x10⁻⁵ mol/L.
Best regards!
PLEASE HELP IM TIMED
Which of the following is not an oxidation-reduction reaction?
Upper X e upper F subscript 6 (s) right arrow upper X e upper F subscript 4 (s) plus upper F subscript 2 (g).
2 upper C s (s) plus upper I subscript 2 (g) right arrow 2 upper C s upper I (s).
2 upper H subscript 2 upper S upper O subscript 4 (a q) plus 2 upper B a (upper O upper H) subscript 2 (a q) right arrow 2 upper B a upper S upper O subscript 4 upper H subscript 2 upper O (l).
Upper Z n (s) lus 2 upper A g upper N upper O subscript 3 (a q) right arrow upper Z n (upper N upper O subscript 3) subscript 2 (a q) plus upper A g (s).
Answer: choice 2
Explanation:
please tell me which one?
Answer:
i think its c
Explanation:
Does water take up space (have volume)? Yes or no
Answer:
Yes
Explanation:
7th grade help me plzzzz
Answer:
B & A
Explanation:
A Compound consists of two or more atoms from different elements, that are chemically bound together.
A electron carries a negative charge, because it is found in the electron cloud
If your wondering too, A proton carries A Positive charge.
Answer:
2 or more atoms from different elements that are chemically bonded together.
negative charge.
1. What kind of mixture is formed when larger particles settle out when
left undisturbed?
A. colloid B. suspension C. solution
D. solvent
LA
Answer:
B. Suspension
Explanation:
A suspension is an heterogenous mixture in which the large particles settle out when not disturbed, thus ,can easily be separated by filtration.
An example is a mixture of sand and water. When left for a while the sand particles are clearly visible at the bottom of the container if its transparent.
PLEASE HELPPPP
I WILL MARK 1st ONE BRAINLIEST
Answer:
the first one(atoms only give off certain frequencies)
Explanation:
1 point
Which element requires the least amount of energy to remove its valence electron(s)?
barium
chlorine
oxygen
carbon
Analysis of the water content of a lake found in the desert showed that it contained 17.5 percent chloride ion, and has a density of 1.23 g/mL. What is the molarity of the chloride ion in the water
Answer:
The molarity is 6.0 M.
Explanation:
The concentration of a solution is the amount of solute present in a given amount of solvent, or a given amount of solution.
In this problem, we are asked to convert percent by mass to molarity, which are two different concentration units.
The percent by mass is the ratio of the mass of a solute to the mass of the solution, multiplied by 100 percent. On the other hand, molarity (M) is defined as the number of moles of solute per liter of solution.
If we have 17.15 percent chloride ion, that means that we have 17.15 grams of chloride ion in 100 grams of solution. The density provided is the density of the solution, so we calculate how many mL correspond to 100 grams of solution:
1.23 g ----------- 1 mL
100 g ------------ x= 81.3 mL
Therefore, 17.5 grams of chloride ion are contained in 81.3 mL. Now we need to convert these grams into moles.
The atomic mass of chlorine is 35.5 g/mol:
35.5 g --------------- 1 mol
17.5 g --------------- x= 0. 49 mol
This 0.49 moles are contained in 81.13 mL, the definition of molarity says that this moles are contained in a liter (or what is the same, 1000 mL):
81.3 mL --------------- 0.49 mol
1000 mL ------------- x= 6.0 M
The molarity of the chloride ion will be 6.0 M.
formal charge of hcooh
Answer:
What is the question?
What is the density of a glass piece that has mass of 18 g and a volume of 24 mL?
Answer:
The answer is 0.75 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{18}{24} = \frac{3}{4} \\ [/tex]
We have the final answer as
0.75 g/mLHope this helps you
At which temperature can water contain the most
dissolved sugar?
Answer:
At 10ºC or 50ºF water can cotain the most dissolved sugar.
What is the specific rotation of a sample of carvone that is an equal mixture of the R and S enantiomers
Answer:
Zero
Explanation:
An an equal mixture of the R and S enantiomers of carvone is called a racemic mixture.
In a racemic mixture, the R enantiomer rotates plane polarized light in one direction while the S enantiomer rotates plane polarized light in another direction.
This cancels out the rotation due to each enantiomer since they are equal in magnitude but opposite in direction leading to a specific rotation of zero for the racemic mixture.
Calculate the molarity of 32.9 g32.9 g of MgS MgS in 971 mL 971 mL of solution.
Answer:
0.60 M
Explanation:
Given data:
Mass of MgS = 32.9 g
Volume of solution = 971 mL (0.971 L)
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Number of moles of MgS:
Number of moles = mass/molar mass
Number of moles = 32.9 g/ 56.38 g/mol
Number of moles = 0.58 mol
Molarity of solution:
M = 0.58 mol/ 0.971L
M = 0.60 M
what elements make up duralumin( an alloy)?
Answer:
In addition to aluminium, the main materials in duralumin are copper, manganese and magnesium.
Answer:
The original composition has been varied for particular applications; it may contain about 4 percent copper, 0.5–1 percent manganese, 0.5–1.5 percent magnesium, and, in some formulations, some silicon.
Calculate the frequency of a wave with a wavelength of 5.62 x 1010 m. (first convert m to nm)
Answer:
f = 0.534×10⁻² Hz
Explanation:
Given data:
Frequency of wave= ?
Wavelength of wave = 5.62×10¹⁰ m
Solution:
Formula:
Speed of wave = wavelength × frequency
Speed of wave = 3×10¹⁷ nm/s
λ = 5.62×10¹⁰m×10⁹ nm/1 m = 5.62×10¹⁹ nm
Now we will put the values in formula.
3×10¹⁷ nm/s = 5.62×10¹⁹ nm × f
f = 3×10¹⁷ nm/s / 5.62×10¹⁹ nm
f = 0.534×10⁻² s⁻¹ or
f = 0.534×10⁻² Hz
How many moles of H2SO4 are required to completely react with 7.20 mol of Al according to the balanced chemical reaction: 2Al(s) +3H2SO4(aq) → Al2(SO4)3(aq) +3H2(g)
10.8
7.2mol*3/2=10.8mol.
10.8 moles of H₂SO₄ is required for the reaction.
The balanced equation for the reaction is given below:
2Al + 3H₂SO₄ —> Al₂(SO₄)₃ + 3H₂From the balanced equation above,
2 moles of Al required 3 moles of H₂SO₄.
Finally, we shall determine the number of mole of H₂SO₄ required to react with 7.20 moles of Al.
This can be obtained as follow:
From the balanced equation above,
2 moles of Al required 3 moles of H₂SO₄.
Therefore,
7.20 moles of Al will require = [tex]\frac{7.2 X 3}{2} \\\\[/tex] = 10.8 moles of H₂SO₄
Thus, 10.8 moles of H₂SO₄ is required for the reaction.
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