Question

the molar mass of water (H2O) is 18.0 g/mol. A sample of water has a mass of 18.0. How many moles of water are contained in this sample?

A. 1.00
B. 18.0
C. 36.0
D. 324

Answer 1

molar mass = grams/moles
re-arranging gives us moles = grams/molar mass

Answer 2

i just want an answer

Answer 3

giving direct answers is against the rules

http://openstudy.com/code-of-conduct

since we know that moles = mass/molar mass, we can plug in the mass and the molar mass to find the number of moles

Answer 4

1.00?

Answer 5

yes, good job!