In a group assignment, students are required to fill 10 beakers with 0.720 M CaCl2. If the molar mass of CaCl2 is 110.98 g/mol and each beaker must have 250. mL of solution, what mass of CaCl2 would be used? Use mc008-1.jpg.
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Answer:
Total volume=10*0.250=2.5liters
m=n/v(liters)
Total moles:
n=m*v
n=0.720mol/liter*2.5liter
n=1.8mol
mm=grams/n--->grams
=n*mm
=1.8mol*110.98g/mol
=199.8grams
=200g
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