Question

What is the molar mass of barium perchlorate, Ba(ClO₄)₂?

	A.	189.90 g/mol
	B.	272.24 g/mol
	C.	336.20 g/mol
	D.	240.24 g/mol
	E.	304.24 g/mol

The number of moles of glucose (C₆H₁₂O₆), in 152 grams of glucose is:

(atomic weights: C = 12.0, H = 1.00 and O = 16.0)

	A.	1.18 mols
	B.	180 mols
	C.	0.844 mol
	D.	29.0 mols
	E.	12.0 mols

What is the weight, in grams, of a sample of NaNO₃ if this sample contains 3.80x10²⁴ atoms of oxygen?

(Molecular wt. of NaNO₃ = 85.0 g/mol)

	A.	1.61x103 g
	B.	179 g
	C.	537 g
	D.	85.0 g
	E.	6.31 g

Answer 1