How many moles of methane molecules, CH4, are in 80 grams of methane

Number of mole = 5moles

Explanation:

To find the number of mole of methane, we will use the formula

n = m / Mm

n - moles

m - mass

Mm - molar mass

Since m - 80g

Let's calculate the molecular weight of CH4

C - 12

H - 1

Mw = 12 + 1 * 4

= 12 + 4

= 16g/mol

n = 80g/16g/mol

n = 5moles