What mass of calcium chloride is dissolved in 100.mL of a 1.20 M solution of calcium chloride?
A)0.120 g
B)1.20 g
C)13.3 g
D)133 g

Question

Quizplus · Accepted Answer

To find the mass of calcium chloride, we need to use the formula:

mass = (concentration x volume x molar mass) / 1000

where:
- concentration = 1.20 M
- volume = 100 mL = 0.1 L
- molar mass of CaCl2 = 110.98 g/mol

Plugging in the values, we get:

mass = (1.20 x 0.1 x 110.98) / 1000
mass = 1.33176 g or 13.3 g (rounded to two significant figures)

Therefore, the best choice is C.

What Mass of Calcium Chloride Is Dissolved in 100