Answer to Question #161126 in Chemistry for Aliyah Muhammad

Question

How many grams of beryllium BeCl 2 are needed to make 125ml of 10 % solutions

Answer 1

Solution:

Concentration in % (w/v) = 100 × (mass solute in g) / (volume solution in mL)

Hence,

10% m/v = 100 × (mass BeCl₂ / 125 mL)

mass BeCl₂ = 12.5 g 

Answer: 12.5 grams of BeCl₂ are needed to make 125 mL of 10% solution.