Chemistry High School

Thermal energy is added to water to raise the temperature to 250F.
Which of the following models BEST describes the movement of the particles after the thermal energy is added?

Thermal Energy Is Added To Water To Raise The Temperature To 250F.Which Of The Following Models BEST

Answers

Answer 1

Answer:A

Explanation:the water will start to boil representing the yellow particles.

Answer 2

Answer:

A

Explanation:

Lol I'm doing the test right now and I have notes

Related Questions

In a sample of double-stranded DNA, 12% of the nitrogenous bases are guanine (G). What percentage of the nitrogenous bases in the sample are cytosine

Answers

Answer:

12%

Explanation:

The percentage of Guanine and Cytosine in DNA are equal to each other, as one molecule of guanine bonds with one molecule of cytosine.

If 12% of the nitrogenous bases are guanine, then another 12% will be Cytosine.

Conversely, the percentage of adenine and thymine in DNA are equal to each other.

Which nitrogen base sequence is the partner of C-A-T-C-G-A?
C-A-T-C-G-A
G-T-A-G-C-T
T-G-C-T-A-G
G-C-A-T-G-T

Answers

Answer:

The answer should be B. G-T-A-G-C-T

A pairs with T and G pairs with C.

Answer:

It's B, GTAGCT.

Explanation:

Which molecule is Polar
HF
SiBr4
CO2
CH20

Answers

Answer:

Polar molecules have a non-zero net dipole moment. Both CO2 and H2O have two polar bonds. However the dipoles in the linear CO2 molecule cancel each other out, meaning that the CO2 molecule is non-polar. The polar bonds in the bent H2O molecule result in a net dipole moment, so H2O is polar.

Explanation:

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8. A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013.

Does this statement describe the meteor’s speed or velocity? 1pt


9. Why did you choose the answer above (explain why)? 1pt

Answers

Answer:

Its velocity was 7.8 km/s northward.

Explanation:

Because the meteor was only 45 m wide and was 27,700 km above Earth's surface it was not visible with the aid of a telescope.

What is the percent composition by mass of suifur in Na2SO?
(Molar mass of Na2SO.= 142 g/mol)

Answers

Answer:

22.5%

Explanation

% composition = Molar mass of S

------------------------ x 100

Molar mass of Na2SO4

= 32.065

------------ x 100

142

=0.225 x 100

= 22.5%

Given the reaction: 2 H2 + O2 => O2 = 2 H2O.
What is the total mass of water formed when 497.80 g of oxygen reacts with hydrogen?

Answers

Mol of oxygen = mass / Mr = 15.556
1:2 mol ratio so multiple by 2
= 31.1125 mol of water
Mass = mol x Mr
= 31.1125 x 18 = 560.025g

Describe the behavior of water molecules during each stage of the water cycle.


Hurry pls this is due by the end of the class period so like 10 MINUTES HELP

Answers

Answer:

chupapi muano goagaag djdu

1. Which has the greater blue or indigo light?

Answers

Answer:

Indigo wavelength is between  

420

and  

450

nm.

Blue wavelength is between  

450

and  

495

nm.

So blue has a greater  

λ

than indigo.

Explanation:

Answer:

Indigo has greater frequency.

Have a great day!

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Explain how proper motion will affect the constellation as seen from the earth.

Answers

Proper motion describes how stars slowly drift in space and change their position in relation to the sun. Since stars have proper motion, over time, the patterns we see now in constellations will not be the same.

For each of the following unbalanced equations indicate how many moles of the second reactant would be required to react exalt with 0.275 mole of the first reactant. Balance the equation.Co(s) + P4 (s) Co3P2 (s)

Answers

Answer:

0.183 mol

Explanation:

so balenced equation is 6Co+4P=2(Co3P2)

so so the ratio is 6:4

so .275/6*4

=0.183 mol I think

The Answer will be:  0.183 mol

 so that the balanced equation is 6Co+4P=2(Co3P2) When the ratio is 6:4

       so that .275/6*4

      =0.183 mol.

When According to the A balanced chemical is equation has been equal numbers of atoms that are for each element they are involved in the reaction and its represented on the reactant and its product sides.Also that This is a better requirement that makes the equation must be satisfied and also that to be consistent with the law of conservation of the matter. then It may occur that it is confirmed by simply summing the numbers of atoms and also molecules on it either side of the arrow and it's comparing these sums to ensure that they are equal.  

( 1 CO 2  molecule  ×  2 O atoms CO 2 molecule) + ( 2 H 2 O molecule  × 1 O atom H 2 Molecule  ) = 4 O atoms

Learn more about:

https://brainly.com/question/13719614

Which of the 3 molecules: Methane, Propane, Butane would release the most energy when combusted?

Answers

Answer:

butane

Explanation:

HELP ASAP I will mark brainliest

Answers

Answer: The last one I think

Explanation:

Answer:

10623.0

Explanation:

Because 3541 is speed per hour

You need to find 3 hours

so multiply 3541 x 3

3541 x 3 = 10623

10623.0

Why do surface waves break along the shore?​

Answers

As waves reach the shore, the energy in front of the wave slows down due to friction with the shallow bottom. ... The wave breaks, and it usually does so in water depth that is 1.3 times the wave height.

Answer:

because the global sea level rises while the poles temperature increases

Explanation:

An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature as follows:

Answers

Answer:

The concentration of nitrogen gas and hydrogen gas that reacted initially are 10.0 M and 11.0 M respectively.

Note: The question is incomplete. The complete question is as follows:

An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature as follows:

3H2(g)+N2(g)⇌2NH3(g)

At equilibrium, the concentrations are

[H2] = 5.0 M, [N2] = 8.0 M, and [NH3] = 4.0 M.

What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially?

Explanation:

Given the following data:

Concentration of H2 at equilibrium = 5.0 M

Concentration of N2 at equilibrium = 8.0 M

Concentration of NH3 at equilibrium = 4.0 M

The given equilibrium reaction is,

Initial                    a             b            c

Change                -3x          -x         +2x

Equilibrium         (a-3x)       (b-x)     +2x

The value of x is calculated from the equilibrium of NH3

Concentration of NH3 at equilibrium = 4.0 M  = 2x

x = 2.0 M

Substituting the value of x above

Initial Concentration of H2:

a - 3 × 2.0 M = 5.0 M

a = 6.0 M + 5 = 11.0 M

Initial Concentration of N2:

b - 2.0 M = 8 M

b = 8.0 M + 2.0 M

b = 10.0 M

Therefore, the concentration of nitrogen gas and hydrogen gas that reacted initially are 10.0 M and 11.0 M respectively.

In the cycle, after a new moon, _______________ means light appears on the _____________ side of the moon and continues to ________________.

Answers

Answer:

Explanation:

In the cycle, after a new moon, waxing means light appears on the right side of the moon and continues to increase.

Which layer over time due to chemical and physical weathering leads to the other layers?

Answers

Answer:

chemical weathering occurs on the surface of minerals, the water and acids that control chemical weathering require access to the surface. Physical weathering breaks the rock to provide that surface

HELP NEEDED
How many nanoliters are in 1 liter. Show work

Answers

1 000 000 000 nanoliters

1000000 ur welcomeeee

Which of the following is not a part of the digestive system

A. Mouth
B.Esophagus
C.Intestines
D.Kidneys

Answers

Answer:

Kidneys •_•

Hope this helped <3

D. Kidneys
The rest of the choices are in the digestive tract

Why does lowering the pressure cause a liquid to boil?
A. It becomes easier for molecules to escape.
B. It pushes molecules out of the liquid.
C. It causes the temperature to rise.
D. It changes the volume of the liquid.

Answers

Lowering the pressure in a container will cause the liquid in the container to boil faster because it becomes easier for the molecules to escape.

What causes boiling?

Boiling happens when the vapor pressure of a liquid equals the atmospheric pressure.

By lowering the atmospheric pressure, the vapor pressure of a liquid takes a lower time to equal the atmospheric pressure.

Thus, it becomes easier for the molecules of the liquid to escape from each other.

More on boiling and pressure can be found here: https://brainly.com/question/2510654

The amount of matter in an object is ___ and a common unit is the ___.

A. mass, mL
B. volume, mL
C. volume, gram
D. mass, gram

Answers

The answer would be B.

Answer:

The answer is D

Explanation:

Mass is the amount of matter in an object and gram is the common unit of measurement of mass

what type of bond holds different water molecules together

Answers

Polar covalent bonds

How many grams of gasoline were
burned if 1.63 x 1023 molecules of
water were produced? Only report
number (no units) and use correct sig
figs.

Answers

Answer:

31.0 g C8H18

Explanation:

Gasoline is equivalent to C8H18

to convert molecule to gram you have to convert molecules to mols first.

Using Avocado's number we can figure that out.

(1.63 x 10²³ molecules C8H18) (1 mol C8H18/ 6.022 x 10²³) = 0.271 mols C8H18

Then we convert mols to grams using the molar mass of C8H18

C - 8(12.011) = 96.088 g/mol

H - 18(1.008) = 18.144 g/mol

add that together: 114.232 g/mol

(0.271 mol C8H18) (114.232 g/ 1 mol C8H18) = 31.0 g

31.0 g C8H18

P.S: SORRY IF THIS DOESNT HELP!! I dont know if they are talking about the actual formula for gasoline.

Explain why the elements in group 7 have 7
valence electrons.

Answers

Answer:

The periodic table was made that way by the scientists who created it

Explanation:

to make things easier for the users.

The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a.

Answers

Answer:

Sorry i might be wrong but I believe the answer is evaporation

Explanation:

Its says the diagram So is there a diagram u can show us?

Answer:

physical change, because a new substance is formed

Explanation:

Water can exist in all three states of matter.
Describe the arrangement and movement of particles in each of the three states of matter. Explain what happens to the particles in a liquid during boiling.

I'll give someone brainly and thanks if they answered the question correctly. 30 points!!

Answers

Answer:

The particles in a liquid move very quickly due to heat while it is boiling and gradually turns to gas

The ion which forms from element 36 is known as
A. Krypton ion
B. Kryptonite
C. kryptonide ion
D. this ion does not exist

Answers

Answer: A
Krypton is a chemical element with the symbol Kr and atomic number 36.

Help ASAP I will mark brainliest for the correct answer !!!⚡️

Answers

the 2nd one i believe, position

Answer:

motion

Explanation:

is ammonia a compound element or mixture

Answers

Answer:

mixtyre

Explanation:

How many grams of Sn will be created when 114 grams of SnO2 react with excess H2? SnO2 + H2 ->Sn + H2O
I

Answers

Explanation:

CNN vfbtgnynynynynyuybunujy

What happens to the air as a stove heats it? This question is about thermal expansion and convection, not “it gets hot”.
20 points for answering

Answers

Answer:

When there is heat at the bottom of this air or water, the air or water molecules in contact with the heat start to move, and the molecules spread apart. The heated air or water becomes less dense. It rises up until it gets to air or water with the same density as it has, and when it gets there, it pushes the air or water that was there out of the way. At the same time, new air or water fills the space that was vacated when the heated molecules rose up. The air or water that gets pushed out of the way falls down. This sets up a circular motion. Air or water is heated at the bottom, travels to the top, cools, gets denser, falls, is heated again and the whole cycle starts again. Convection does not occur in space because there is no gravity. Ovens work by convection. The heating coils at the bottom of the oven heat the air which climbs to the top, cools slightly, and falls down again.

Explanation:

Other Questions
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