3 years ago

The center portion of the atom that contains the protons and neutrons is called the _____? nucleus

Chemistry

1 answer:

Virty [35]3 years ago

3 0

It's called the atomic mass

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The vapor pressure of water and the partial pressure of hydrogen contribute to the total pressure of 715 torr. What is the parti

Lostsunrise [7]

Answer:

0.91 atm is the partial pressure of just hydrogen gas.

Explanation:

Vapor pressure of water , p= 0.0313 atm

Partial pressure of hydrogen gas = $p_{H_2}$

Total pressure of the water vapors and hydrogen gas = P = 715 Torr

1 atm = 715 Torr

$715 Torr=\frac{715}{760} atm=0.94 atm$

According Dalton's law of partial pressure:

$P=p+p_{H_2}$

$0.94 atm=0.0313 atm+p_{H_2}$

$p_{H_2}=0.94 atm - 0.0313 atm =0.9087 atm \approx 0.91 atm$

0.91 atm is the partial pressure of just hydrogen gas.

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3 years ago

What is Matter and give the examples

Paha777 [63]

Answer:

Matter is a substance that has inertia and occupies physical space.

Matter is literately in everything

Explanation:

Examples of matter:

Your body

A home

The air

Things that are not matter are:

A light

Heat form fire

Sounds

There not matter because you cant touch, smell or taste them.

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2 years ago

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8. Calculate the molar mass of an alkane with the mole- cular formula C H18.

andreyandreev [35.5K]

Answer:

Molar mass of CH18 =30

Explanation:

CH18

Molar mass of carbon = 12

Molar mass of hydrogen (H) = 1

CH18 = 12 + 1 (18) = 12 +18 = 30

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Answer:

the answer is D

Explanation:

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In Charles's law, gas volume is directly related to the Celsius temperature.

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Yes this is true gas is related to the celcuis temp

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