Question

calculate the mass of 4.30 mol of methane CH4

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Answer 1

Explanation:

moles of methane= mass of methane /molar mass of methane

mass of methane=4.30×16=68.8

Answer 2

Given :

• Number of moles of methane CH4 = 4.3 mol

To find :

• mass of methane CH4.

Formula used :

$n \: = \dfrac{mass}{molar \: mass}$

where n is number of moles.

Solution :

Number of moles of methane CH4 = 4.3 mol

Now we will find mass of methane CH4 by using the formula :-

$\implies \: n \: = \dfrac{mass}{molar \: mass}$

Molar mass of methane = 12 + (4×1) = 16 u

$\implies \: 4.3 = \dfrac{mass}{16}$

$\implies \: 4.3 \times 16= mass$

$\implies \: \dfrac{43}{10} \times 16= mass$

$\implies \: \dfrac{688}{10} = mass$

$\implies \: {68.8} = mass$

Therefore mass of methane = 68.8 g

Answer :

Mass of 4.30 mol of methane CH4 = 68.8 g.