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kvv77 [185]
3 years ago
11

How many moles are in a 62.5-g sample of potassium nitrate (KNO3)?

Chemistry
1 answer:
Reil [10]3 years ago
7 0

Answer:25.3 g of KNO₃ contain 0.25 moles.

Explanation:

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Dmitri Mendeleev Was the name of the guy you where looking for
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3 years ago
A gas at STP has a volume of 1.00 L. If the pressure is doubled and the temperature remains constant, what is the news of the ga
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Answer: PV = nRT

A gas at STP... This means that the temperature is 0°C and pressure is 1 atm.

R is the gas constant which is 0.08206 L*atm/(K*mol)

Rearranging for volume

V = nRT/P

The temperature and number of moles are held constant. This means that this uses Boyle's Law. (The ideal gas law could be manipulated to give us this result when T and n are held constant.)

PV = k

where k is a constant.

This means that

P₁V₁ = k = P₂V₂

P₁V₁ = P₂V₂

(1 atm) * (1 L) = (2 atm) * V₂

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The new volume of the gas is 0.5 L.

Explanation:

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2 years ago
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3 years ago
A forest area is being used for a new housing development. Most of the trees have been removed to make room for the
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Answer:

The correct answer would be - lose their native habitats are forced to migrate into new areas in search of shelter and food.

Explanation:

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It causes complete removal of bird species and forced them to migrate to a new place in search of places that will provide a source of shelter and food for birds.

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An atom of which element has the greatest attraction for the electrons in a bond with a hydrogen atom?
Nadusha1986 [10]
The question can be changed into a new form:
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7 0
3 years ago
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