Question

Calculate the moles present in 2.00 grams of H2O

Answer 1

0,1 moles

Step-by-step explanation:

moles (n) = mass : Mr

n = 2 grams : (2 × H + 1 × O)

n = 2 grams : (2 + 16)

n = 2 grams : 18 grams/moles

n = 1 : 9 moles

n = 0,1 moles