Question

Calculate the mass of 112cm3 of hydrogen gas at stp

Answer 1

Answer: The mass of hydrogen gas at STP is 0.01 grams.

Explanation:

STP conditions are known as standard temperature and pressure. Temperature as 273 K and pressure at 1 atm.

We are given that the volume of hydrogen gas is

So, by using the conversion factor:

According to the mole concept:  

22.4 L of volume is occupied by 1 mole of a gas.

So, 0.112L of volume will be occupied by

To calculate the mass of hydrogen gas, we use the equation:

Moles of hydrogen gas = 0.005 mol

Molar mass of hydrogen gas = 2 g/mol

Putting values in above equation, we get:

Mass of hydrogen gas = 0.01 grams

Hence, the mass of hydrogen gas at STP is 0.01 grams.

Answer 2

Answer:

The mass of hydrogen gas at STP is 0.01 grams.

Hope it will help you

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Aafreen.....