Question

What would be the mass of a sample containing 0.7 mol of pure tungsten?

0.04 g

51.8 g

128.7 g

262.6 g

Answer 1

Mr of tungsten = 183.84

to find mass = Mol * Mr

.7 * 183.84

128.7

Answer 2

0.7 * 183.84 = 128.68800

Answer 3

when retarded Kids just copy someones solution and write it in a more significant figures its just so funny hahahaha

Answer 4

we know that # of moles = gram of mass / molecular weight
therefore gram of mass = moles * MW
MW of tungsten = 183.84 g/mole
moles = 0.7 moles

So m = (183.84 g/mole) * (0.7 moles)

Answer 5

we are all here mainly to assist others.
you and I have some knowledge and we have no right to keep it for just ourselves.
so I apologize if i bothered you but no need for your words to be written here.

Answer 6

@hmemy well said! disregard irrelevant people like @hashsam1