How many moles of water are in 0.34g of water?

1 Answer
Aug 15, 2016

Answer:

#"Number of moles"# #=# #"Mass"/"Molar mass"# #~=# #0.02*mol#

Explanation:

And thus, #(0.34*cancelg)/(18.01*cancelg*mol^-1)# #=# #(??)/(mol^-1)# #=# #??mol#

Note that all I have done here is set up the problem dimensionally. I want an answer in moles, and it seems I got an answer in moles, which makes me think that I have done it right. How many water molecules in such a quantity?