Question

the weight of 0.5 mole of ch4 is​

Answer 1

1 mole of ch4=12+4 =16g
0.5 mole of ch4= x
by cross multiplication
(0.5)(16)=x
x=8g

Answer 2

Given:

The number of moles of Methane (CH₄) = 0.5 mole

To Find:

The weight of the given moles of methane (CH₄).

Solution:

The molecular weight of the methane (CH₄) =

{Molecular weight of carbon atom+(Molecular weight of Hydrogen atom×4)}

⇒ The molecular weight of methane = 12 + (4 × 1) = 16 g/mol

So, the weight of one mole of methane = 16 grams

⇒ The weight of 0.5 mol of methane = (16 × 0.5) grams = 8 grams

Hence, the weight of 0.5 mol of methane is 8 grams.