Learning Task # 8.1 Concentration of Solutions Part 2 Learning Competency: Express concentrations of solutions quantitatively by preparing different concentrations of mixtures according to uses and availability of materials.
Directions: Compute the amount of solute and/or solvent in the given problems. Write your computations. FORMUL4: Amount of solute = amount of solution x percentage 100%
1. How many mL of ethyl alcohol is present in a 150 ml bottle of rubbing alcohol containing 40% ethyl alcohol?
2. How many grams of iron is present in a 500g steel containing 80% iron by mass
3. How many mL of acetic acid are present in a 5% acetic acid in 80 mL vinegar?​