A compound has an empirical formula of NiCl2.6 H2O . How many moles of water are there in one mole of this compound?

1
2
6
0.5

Question

A compound has an empirical formula of NiCl2.6 H2O . How many moles of water are there in one mole of this compound? 

	1
	2
	6
	0.5

doc.brown · Answer

How many Ni, how many Cl, how many H2O in 1 molecule?

anonymous · Answer

I'm not sure how to go about figuring this question out! But, I think their are 2 Cl, 1Ni, and 6 H2O.

doc.brown · Answer

You got the answer there.

Remember a mole is a metric heck-of-a-lot of atoms.
If one molecule has 6H20, then 5 molecules has 6H2O x 5 = 30H20
and a heck-of-a-lot of molecules has 6H2O heck-of-a-lot of H20.

$$1 mol = 602214179300000000000000 atoms$$$$6H_{2}O \times 602214179300000000000000 = 3613285075000000000000000H_{2}O$$