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3 years ago

6

What does the kinetic molecular theory explain?

2 answers:

koban [17]3 years ago

8 0

Kinetic Molecular Theory<span> states that gas particles are in constant motion and exhibit perfectly elastic collisions. </span>Kinetic Molecular Theory<span> can be used to </span>explain <span>both Charles' and Boyle's Laws. The average </span>kinetic<span> energy of a collection of gas particles is directly proportional to absolute temperature only.</span>

melomori [17]3 years ago

5 0

Answer:

Heat is due to the motion of molecules.

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Carbondioxide gas is't collectable in water. why?

Lisa [10]

Answer:

carbon dioxide is a gas so it isn't collected over water.

Explanation:

it works for insoluble gases such as hydrogen,or gases that do not dissolve easily in water such as ammonia and chlorine are readily soluble in water and are not collected this way.

hope it is helpful for you.

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3 years ago

An archaeologist graduate student found a leg bone of a large animal during the building of a new science building. The bone had

Vlad [161]

Answer : The time passed in years is $2.74\times 10^2\text{ years}$

Explanation :

Half-life of carbon-14 = 5730 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{t_{1/2}}$

$k=\frac{0.693}{5730\text{ years}}$

$k=1.21\times 10^{-4}\text{ years}^{-1}$

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{ years}^{-1}$

t = time passed by the sample = ?

a = initial amount of the reactant disintegrate = 15.3

a - x = amount left after decay process = 14.8

Now put all the given values in above equation, we get

$t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{15.3}{14.8}$

$t=274.64\text{ years}=2.74\times 10^2\text{ years}$

Therefore, the time passed in years is $2.74\times 10^2\text{ years}$

4 0

3 years ago

Whatvdo you meant by acid and base

larisa86 [58]

Answer:

e meri a

Explanation:

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Anna [14]

I would say C. petroleum

A is wrong

B is impractical for "mainly used"

D thats too expensive

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3 years ago

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zzz [600]

Question 4 is C. 13 I believe

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3 years ago