Answer:
B.) Its magma has low viscosity.
Explanation:
I know this cause I also use edge and I got it correct.
Answer:
B
Explanation:
Hope you get 100%!
Look at the chemical equation below.
2N2 + O2 2N2O
How many Nitrogen molecules are present? ___________
How many Oxygen molecules are present? ___________
How many N2O molecules are present? ___________
The molecules of Nitrogen, oxygen, and N₂O are 2, 1, and 2 respectively.
What is the chemical equation?A chemical equation can be defined as the expression of a chemical reaction in terms of the chemical symbols of the substances. A chemical equation has reactants, formed products, and an arrow indicating the direction of the reaction.
The equation in which the number of atoms of each element is equal on either side of the chemical equation of a reaction is called a balanced chemical equation.
According to the law of mass conservation, the total mass of the elements on the reactant side should be equal to the total mass of elements on the product side.
Given, the chemical equation of the reaction of nitrogen ad oxygen gas can be written as:
2N₂ + O₂ → 2N₂O
The number of molecules of Nitrogen gas is 2 and the molecules of oxygen gas are one and the molecules of N₂O are equal to 2.
Learn more about the chemical equation, here:
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How many ATOMS of
Hydrogen are found in
Butane (C4H10)?
Answer:
does this help? 17.342%
Explanation:
Which of the following is a hypothesis for an experiment measuring solubility of sodium sulfate?
A. O Sodium sulfate will dissolve better in cold water
B.
Sodium sulfate is toxic (poisonous; deadly) to humans.
c. Add sodium sulfate to water
D. O Sodium sulfate is a white powder
points)
(06.01 LC)
Based on the kinetic theory, which statement is true? (4 points)
A
Matter consists of only large molecules.
B
Matter is made up of only charged particles.
C
The particles of matter have zero kinetic energy and potential energy.
D
The particles of matter are arranged in different ways for the different state.
Answer:
D .The particles of matter are arranged in different ways for the different state.
Explanation:
The kinetic molecular theory is used to explain the forces between molecules and the energy the molecules possesses.
One of the key postulate of this theory is that;
The particles of molecules are continual state of motion. They posses kinetic energy. In gas, the particles are random and moves in a straight line motion. Liquids are less random and only slide past one another. Solids have a restricted space and the molecules are free to move about.Therefore, we can see that the particles of matter are arranged in different ways for different state.
Help! I am in a hurry! Will get brainliest if correct!
In which of the following is the number of neutrons correctly represented
Answer:
there needs to be a picture to answer
How many atoms are in 3CaCO3
Answer:
15
Explanation:
3 Calcium
3 Carbon
9 Oxygen
Do electrons spin in the same direction within an orbital?
Answer:
in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.
Please help
2C3H5O2
1.How many elements are present?
2. How many hydrogen atoms are there?
3. How many oxygen atoms are there?
4.How many total atoms are there?
Answer:
1. 3 elements: C, H, O
2. 10
3. 4
4. 20
Explanation:
Arrange the following elements in order from least to greatest electronegativity:
Ca, F, Ne, Fe?
Answer:
The electronegativity from order of least to highest is:
Ne, Ca, Fe, F
Explanation:
Elements in the periodic table have been arranged based on their level of electronegativity (which is the ability of an atom to attract electrons).
According to Paulings scale of rating elements based on their electronegativity, the electronegativity value of Fe, Ca, Ne, and F are 1.83, 1, 0 and 3.98 respectively.
Hence, based on Pauling scale, the order of electronegativity from least to highest is:
Ne > Ca > Fe > F
When a solid with a mass of 53.78 g is added to 50.0 ml of water in a graduated cylinder, the volume increases to 56.4 ml. Calculate the density of the solid.
Answer:
The answer is 8.40 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
volume = final volume of water - initial volume of water
volume = 56.4 - 50 = 6.4 mL
We have
[tex]density = \frac{53.78}{6.4} \\ = 8.403125[/tex]
We have the final answer as
8.40 g/mLHope this helps you
Make a prediction. How do you think adding other substances to the water would affect its
heating curve?
16. What are the reactants in the equation?
iron + chlorine —> iron chloride
(1) iron chloride only
(2) iron only
(3) chlorine only
(4) iron and iron chloride
(5) iron and chlorine
The number of elements in one molecule of H2O is
1) 5 elements
2) 5 atoms
3) 2 elements
4) 0 elements
Answer:
2 elements
Explanation:
There are the two elements that make water
hEy PeEpS!! SEED HALP!!will give da crown to someone u-u
Answer:
D
Explanation:
This answer is correct; if you want you can use context clues, the middle two are not benefits, the first one is just absurd, so the only other logical answer id D. Also, its true.
The middle two are negative, and therefore cannot be benefits no matter how they are looked at.
For an explanation of the first answer and why it's wrong, read the comments.
A cylinder at left with balls evenly spaced throughout the cylinder with an arrow leading to a cylinder at right with balls stacked near the bottom of the cylinder.
Which change of state is shown in the model?
condensation
deposition
boiling
freezing
help meh plz
Answer:
boiling
Explanation:
Answer:
boiling
Explanation:
The diagram above shows the distribution of speeds for a sample of N2(g)
at 25°C
. Which of the following graphs shows the distribution of speeds for a sample of O2(g)
at 25°C
(dashed line) ?
Answer:
A
Explanation:
The Maxwell-Boltzmann equation, is the basis for discussion of the kinetic theory of gases. From it we can understand how gases are distributed at a particular temperature.
Let us remember that the kinetic energy of all gases is the same at the same temperature. However, the distribution of gases depends on their molecular weight at that particular temperature.
Heavier molecules are known to move slowly compared to lighter molecules. Heavier molecules generally have a smaller distribution while lighter molecules spread out.
For this reason, oxygen which is heavier than nitrogen has a smaller distribution as shown in the diagram (molar mass of oxygen = 32g/mol) while nitrogen (molar mass 28 g/mol) has a distribution that is more spread out being a lighter molecule. Hence the option chosen.
A block of lead displaces 50.5ml of water. The block weighs 698 g. From this
information, calculate the density of lead.
Answer:
13.82 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{698}{50.5} \\ = 13.8217...[/tex]
We have the final answer as
13.82 g/mLHope this helps you
Give the IUPAC name:
Answer:
hope the answer helps you
Explanation:
3 ethyl 2 hexene
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By the IUPAC Naming Convention followed by every chemical standards, the structure from the question is named as 4,4-dimethyl heptane.
IUPAC Stands for International Union of Pure and Applied Chemistry.This organisation issued some standards for naming any chemical components that is followed world wide.
According to the IUPAC Standards:
First of all we have to identify the longest carbon chain which is an alkane group according to this question.As a result of 7 carbon linked with single bonds it will be named heptane.Now moving to the other parts:
[tex]-CH3[/tex] is termed as methyl
As the both the methyl group( [tex]-CH3[/tex] ) is linked with the fourth carbon the numbering is 4 for methyl.So,the IUPAC name of this compound in the image is 4,4-dimethyl heptane.
To know more about IUPAC,
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Suppose you found a material in which 12.5% of the original radioactive atoms were present. If the half-life is 10years, how old is the material?
Answer:
The material is 30 years old.
Explanation:
The decay of radioactive isotopes can be modelled by the following ordinary differential equation:
[tex]\frac{dm}{dt} = -\frac{m(t)}{\tau}[/tex] (Eq. 1)
Where:
[tex]m(t)[/tex] - Current mass of the isotope, measured in grams.
[tex]\tau[/tex] - Time constant, measured in years.
[tex]\frac{dm}{dt}[/tex] - Rate of change of the isotope in time, measured in grams per year.
After some handling, we find that the solution of the differential equation is:
[tex]\frac{m(t)}{m_{o}} = e^{-\frac{t}{\tau} }[/tex] (Eq. 2)
Where:
[tex]m_{o}[/tex] - Initial mass of the isotope, measured in grams.
[tex]t[/tex] - Time, measured in years.
Now we clear time within the expression above:
[tex]t = -\tau\cdot \ln \frac{m(t)}{m_{o}}[/tex]
Besides, we determine the time constant in terms of the half-life ([tex]t_{1/2}[/tex]), measured in years:
[tex]\tau = \frac{t_{1/2}}{\ln 2}[/tex] (Eq. 3)
If we know that [tex]t_{1/2} = 10\,yr[/tex] and [tex]\frac{m(t)}{m_{o}} = 0.125[/tex], then the age of the material is:
[tex]\tau = \frac{10\,yr}{\ln 2}[/tex]
[tex]\tau = 14.427\,yr[/tex]
[tex]t = -(14.427\,yr)\cdot \ln 0.125[/tex]
[tex]t \approx 30\,yr[/tex]
The material is 30 years old.
Atoms of noble gases are generally inert because..
A. they are neutral atoms.
B. their outer electron levels are filled.
C. they are too large to react.
D. they are not charged.
Answer:
B. their outer electron levels are filled
Which of the following has the highest electronegativity?
A. Na
B. Li
C. C
D. Si
Answer:
C. C, because it’s the highest of all four and C is 2,5 which is medium but the highest one.
Answer:
Si
Explanation:
Because it has the most electrons among the four
please help this is worth half of my grade! what letter represents the trough of the wave a,b,c,d,e
Hello good afternoon...God bless the answer to your following question is D
because...A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
What happens to the dry ice after sometime?
Answer:
As a rough rule, five pounds of dry ice will turn from a solid to a gas in 24 hours. It's best to pick up the block of ice just a few hours before your party so it's as frozen as possible when the bash starts.
Explanation:
The density of water is 1.00 g/mL. Which substance below can float on water?
Answer:
ice, air, ducks and fabric
Explanation:
its common sense
After pollen lands on the stigma of a flower, which of the following happens first?
Help I will give brainlist
What is the difference between a hyrdrogen atom and a hydrogen molecule?
Answer:smaller
Explanation:
Answer:
Explanation:
A hydrogen atom (H) is bonded to form hydrogen gas(H2)(a molecule)
Eric is investigating what happens when heat is added or removed from an object. First he places a mug of hot chocolate in this hand and records the temperature of the hot chocolate and the surface of his hand every five minutes for a total of 15 minutes. He repeats this procedure when investigating heat flow with an ice cube. Use the diagram to answer the question below. A flowchart illustration with two forward (right direction) arrows and two backward (left direction) arrows. The phrase Mug of chocolate is followed by the forward arrow A that leads to the word Hand. The word Hand is followed by the forward arrow C that leads to the phrase Ice cube. The word Ice cube is preceded by the backward arrow D that leads to the word Hand. The word Hand is preceded by a backward arrow B that leads to the phrase Mug of hot chocolate. What could Eric conclude about what happens when heat is added or removed from an object after he completed his test with the mug of hot chocolate? A. Arrow A shows the direction heat flowed because the temperature of his hand increased as heat was absorbed by his hand. B. Arrow A shows the direction heat flowed because the temperature of his hand increased as heat was released from his hand. C. Arrow B shows the direction heat flowed because the temperature of the hot chocolate changed as heat was absorbed by the mug. D. Arrow B shows the direction heat flowed because the temperature of the hot chocolate changed as heat was absorbed by his hand.
Answer:
A). Arrow A shows the direction heat flowed because the temp of his hand increased as the heat was absorbed by his hand.
Explanation:
As per the given description, Eric can conclude that when 'heat is either prepended or separated from an object after the completion of his test' as arrow A displays the direction in which the heat has flown because his hands' temperature increased after the heat was absorbed by his hand. It implies that heat is prepended when the temperature of his hand increases and vice versa when the heat is removed. Thus, option A is the correct answer.
letter A is right.
your welcome
i need help fast plzzzzzzzzz
I need help ASAP ... please
Answer:
help with what?