Question

how many grams of hydrogen atom in 3.2gm of methane

Answer 1

Answer:

Mass of H present = 0.8g

Explanation:

Mass of Methane = 12+4 = 16g

4 Moles of Hydrogen is present in Methane

No. of Moles in 3.2g of Methane = 3.2/16 = 0.2 mol

No. of Moles of H atom = 0.2 * 4 = 0.8 mol

Mass of H present = 0.8g

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Answer 2

Answer:

0.8 moles of hydrogen.

explanation:

°note:

here, for methane : mass in gm/molar mass= moles

moles of methane= 3.2/16

=0.2 moles.

°now:

1 mole of methane contains 4 moles of hydrogen.

0.2 moles of methane contains: 4×0.2= 0.8 moles of hydrogen.