Question

VERY URGENT Carbon and Hydrogen combine in the ratio of 3:1 by mass to form CH4. What mass of hydrogen gas would be required to react completely with 12 g of carbon?

Answer 1

Explanation:

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Answer 2

Given - Ratio and mass of carbon

Find - Mass of hydrogen gas

Solution - 0.3 grams of hydrogen gas would be required to react completely with 12 g of carbon.

Firstly the calculating number of moles of carbon = mass/molar mass

Number of moles of carbon = 12/12

Number of moles of carbon = 1

3 moles of carbon react with 1 mole of hydrogen

So, 1 mole of carbon will react to the number of moles of hydrogen = 1/3*1

Number of moles of hydrogen = 0.3

Mass of hydrogen gas = number of moles*molar mass

Mass of hydrogen gas = 1*0.3

Mass of hydrogen gas = 0.3 grams

So, 0.3 grams of hydrogen gas would be required to react completely with 12 g of carbon.