Questionnaire 5 Chem (11th)

What is the %v/v of a solution formed by adding 15 L of acetone with 28 L of water? (Assume volume can be added)

• 55,55 %

• 50 %

• 1,86 %

How would you make 500mL of 30%v/v vinegar in water solution?

• 150 mL vinegar with 350mL water

• 150 mL vinegar with 500mL water

• 150 mL water with 500mL vinegar

What volume of a 40 % m/v solution contains 70 g of solute?

• 175 mL

• 17.5 mL

• 28 mL

5.0 grams of sugar are dissolved in 150 g of water. What is the %w/w of sugar in the solution?

• 30 %

• 3,33 %

• 3,22 %

What is the mass percentage of a solution created by adding 10 g of olive oil to 190 g of vegetable oil?

• 5 %w/w

• 5.26 %w/w

• 19 %w/w

It measures the mass of solute in grams vs the volume of solution in mL.

• % w/w

• % w/v

• %v/v

What volume must be mixed with 25 mL of water to create a 5% v/v mass solution?

• 13, 2 mL

• 1,32 mL

• 1,25 mL

Molarity is a unit of concentration, measuring the number of moles of a solute per liter of solution

• True

• False

Determine the molarity of 12.3 mol of solute in 5 L of solution

• 40,6 M

• 0,406 M

• 2,46 M

How many moles of solute are dissolved in 30 mL of solution 3,5 M?

• 0,105 mol

• 10,5 mol

• 0,116 mol