Question

Check my answers please?!

Answer 1

Question.
Using the steps below, calculate the molarity of 65.0 grams of CaCl2 dissolved in 250 mL of H2O? Atomic Masses: Ca= 40g/mol; Cl= 35.5 g/mol; H= 1g/mol; O= 16g/mol
a) Step 1: What is the molar mass of CaCl2?
b) Step 2: Convert grams of CaCl2 to moles of CaCl2.
c) step 3 convert ml to liters
d) Step 4: Divide the number of moles of CaCl2 by the number of liters in the solution

Answer.
a) 40 + (35*2) = 110
b) 65.0 * (1/110) = 0.59
c) 250/1000 = 0.25
d) 0.59/0.25 = 2.36

Answer 2

GOOd job !

Answer 3

don't forget the units

Answer 4

Thank you!