# Moles And Molarity: Question Preview (ID: 3277)

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What is the molar mass of CuFeS2?
a) 152 g
b) 184 g
c) 3.07 X 10^24 g
d) 1.108 X 10^26 g

How many moles of CH4 are in 1.2 x 10^26 molecules?
a) 7.224 x 10^49 moles
b) 7.5 x 10^24 moles
c) 1.99 moles
d) 199.34 moles

What was the molarity of a solution containing 4.5 moles of NaCl in 100 ml?
a) 45 M
b) 0.078 M
c) 0.045 M
d) 0.776 M

How many grams of NiCl2 are in 2.56 moles?
a) 99g
b) 0.026 g
c) 253.44 g
d) 1.54 x 10^24 g

How many grams of KCO3 are needed to make a 22.4 M solution within 3.6 L?
a) 0.81 grams
b) 80.64 moles
c) 99 g
d) 7983.36 g

How many ml of solution are needed to make a 5.78 M solution with 2.98 moles of CaO?
a) 520 ml
b) 0.52 ml
c) 0.0532 ml
d) 53.2 ml

How many grams are needed to make 8.3 moles of C12H22O11?
a) 41.20 grams
b) 4.997x10^24 grams
c) 2838.6 grams
d) 1.38 x 10^-23 grams

How many formula units are in 9.6 moles NH4CO3?
a) 0.12 formula units
b) 5.78 x 10^24 formula units
c) 748.8 formula units
d) 1.59 x 10^-23 formula units

How many moles of Al2Cl3 are needed to creat a 6.7 M solution using 400ml of water?
a) 426.12 grams
b) 0.0168 moles
c) 2680 moles
d) 2.68 moles

You have 35.2 g of barium hydroxide Ba(OH)2. How many moles is that?
a) 0.21 mol
b) 6019.2 mol
c) 2.119 x 10^25 mol
d) 5.847 x 10^-23 mol

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