Density of an aqueous calcium chloride solution is 1.23 g per mL. If 30.0 grams
ID: 942812 • Letter: D
Question
Density of an aqueous calcium chloride solution is 1.23 g per mL. If 30.0 grams of the solution are needed for a reaction, how many mL of the CaCl2 solution should be poured into the reaction vessel? (This question is about calculating the volume if given the mass and density).
36.9 ml
0.0369 ml
0.0004 ml
24.4 ml
How many moles of magnesium, Mg, are there in 202 g of magnesium oxide, MgO? Report your answer to 3 significant figures!
5.01 moles
5 moles
3.02X10^24 moles
5.0124 moles
Density of an aqueous calcium chloride solution is 1.23 g per mL. If 123 grams of the solution are needed for a reaction, how many mL of the CaCl2 solution should be poured into the reaction vessel? (This question is about calculating the volume if given the mass and density).
151 mL
0.0151 mL
100. mL
0.0041 ML
36.9 ml
0.0369 ml
0.0004 ml
24.4 ml
5 moles
3.02 X 1024 moles
5.0124 moles
Ag+(aq) + Na+(aq) + Cl-(aq) -- > AgCl(s) + Na+(aq)
36.9 ml
0.0369 ml
0.0004 ml
24.4 ml
Explanation / Answer
Density of an aqueous calcium chloride solution is 1.23 g per mL. If 30.0 grams of the solution are needed for a reaction, how many mL of the CaCl2 solution should be poured into the reaction vessel? (This question is about calculating the volume if given the mass and density).
D = 1.23 g/ml
m = 30 g of solution
find volume of solution needed
the equation
D = mass/Vol
solv efor Vol
Vol = mass/D = 30/1.23 = 24.39024 ml
Volume requried = 24.39024
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