2 years ago

Based on the kinetic molecular theory (KMT), which statement is true?

Chemistry

1 answer:

nataly862011 [7]2 years ago

5 0

Statement 1 is false because heat is the movement of molecules.

Statement 2 is true because matter is composed of elementary particles which are VERY small.

Statement 3 is false because the kinetic energy of a particle determines its heat and it is impossible for a particle to be completely motionless.

Statement 4 is false because neutrons do not have a charge and make up a large portion of all matter.

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A certain box contains 200 particles of an ideal gas. how many times more likely is it to find the particles evenly split betwee

Strike441 [17]

Each particle has two possibilities: either it is on the left hand side or it is on the right hand side.

The probability of having them equally split is

P(100,100) = 200C100 / 2^200

where 200C100 is the binomial coefficient.

For the uneven distribution we have

P= 2 * 200C160 / 2^200

where the factor 2 comes in because we could have 160/40 or 40/160 as a division.

So the ratio of probabilities is

200C100 /(2 * 200C160 )

= 2.2 * 10^16

Hope this helps!

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2 years ago

Convert 1.50μm2 to square meters

IrinaVladis [17]

1 micro meter = $10^{-6} meters$
1 μm ^2 = 1 μm*1μm = $10^{-6} *10^{-6} = 10^{-12}$ meters

1.5 μm^2 = 1.5 * $10^{-12}$ meters

μm^2 is a unit for surface. First you want to convert μm to meters which is unit for length and if you multiply units for length you get unit for surface.

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2 years ago

Which of the following is the best description of the results of a chemical reaction?

dedylja [7]

Answer:

A, new substance is formed with different properties

Explanation:

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2 years ago

What is the mass percent of 6.8 of sucrose in 38.4 grams of water

amm1812

The answer is 83% percent

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3 years ago

Need it in 2 minutes ASAP

RUDIKE [14]

Answer: read your book

Explanation: if you read it should be in there

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