3 years ago

What determines the speed at which a particle of matter moves

Chemistry

1 answer:

Zepler [3.9K]3 years ago

5 0

Answer:

The force exerted on it.

Explanation:

As the law of motion states, an object at rest will remain at rest an object in motion will remain in motion unless acted upon by another force.

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A solution is made by dissolving 0.565 g of potassium nitrate in enough water to make up 250. mL of solution. What is the molari

aalyn [17]

<h3>Molar mass of Potassium Nitrate:-</h3>

$\\ \large\sf\longmapsto KNO_3$

$\\ \large\sf\longmapsto 39u+14u+3(16u)$

$\\ \large\sf\longmapsto 53u+48u$

$\\ \large\sf\longmapsto 101u$

$\\ \large\sf\longmapsto 101g/mol$

Now

$\boxed{\sf No\:of\:moles=\dfrac{Given\:mass}{Molar\:mass}}$

$\\ \large\sf\longmapsto No\:of\:moles=\dfrac{0.565}{101}$

$\\ \large\sf\longmapsto No\:of\:moles=0.005mol$

We know

$\boxed{\sf Molarity=\dfrac{Moles\:of\:solute}{Vol\:of\:Solution\:in\:L}}$

$\\ \large\sf\longmapsto Molarity=\dfrac{0.005}{\dfrac{250}{1000}L}$

$\\ \large\sf\longmapsto Molarity=\dfrac{0.005}{0.250}$

$\\ \large\sf\longmapsto Molarity=0.02M$

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Balance the following equation.<br> ___ I + ___ O2 ___ I4O10

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4I+5O2=I4O10? which would be a synthesis reaction

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Is it iron or lead ???

san4es73 [151]

^^ they are correct

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2 years ago

What happens to the size of a metal element as it becomes a cation?

meriva

It decreases because it is losing an electron

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A 54-kg jogger is running at a rate of 3 m/s. What is the kinetic energy of the jogger

Phantasy [73]

Kinetic energy = 1/2mv²
where m = 54kg
and v =3m/s
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= 1/2×54×9
= 1/2×426
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3 years ago