What mass of MgBr₂ in grams are in 215 mL of a 0.350 M solution of MgBr₂?

Answer 1

M= Molarity which is a measure of moles per Liter.

1. convert 125mL to 0.125L
2. plug in values to Molarity and solve algebraically for moles of MgBr₂
3. 0.350 = moles/0.125L
4. moles of MgBr₂= 0.04375 mol
5. convert moles to grams using molar mass
6. 0.04375mol MgBr₂ *(184.11g MgBr₂/1mol MgBr₂) = 8.05 gMgBr₂