Question

2. What is the concentration in percentage by mass when 18.0 grams of KNO3 is dissolved in 150 grams of

water?

Answer 1

%HNO₃ = 10.3%

Step-by-step explanation:

%KNO₃ = (mass KNO₃/mass water + mass KNO₃)100%

=> (18.0/150+18)100% = 10.7% by weight