How many moles are there in 276 grams of ethanol CH3 CH2 OH

6 moles

Explanation:

We'll begin by obtaining the molar mass of ethanol (CH3CH2OH). This is illustrated below:

Molar Mass of CH3CH2OH =

12 + (3x1) + 12 + (2x1) + 16+1

= 12+3+12+2+16+1

= 46g/mol

Mass of CH3CH2OH from the question = 276g

Number of mole CH3CH2OH = ?

Number of mole = Mass / Molar Mass

Number of mole CH3CH2OH = 276/46

Number of mole CH3CH2OH = 6 moles

Therefore, there are 6 moles in 276g of ethanol (CH3CH2OH)