Applications of Concentrations

What volume of solution is prepared when 25.0 g of NaCl is added to enough water to make a 2.50 M NaCl solution?

0.171 L

Which expression is equivalent to 0.500 M NaCl?

0.500mol NaCl/1L solution

What volume of solution is prepared when 25.0 g of ethanol (C2H5OH) is added to enough water to make a 0.750 M ethanol solution?

0.724 L

Which expression is equivalent to 1.35 M KBr?

1.35 mol KBr/1L solution

What mass of NaCl is present in 50.0 g of 3.75% (m/m) NaCl solution?

1.88 g

Which expression is equivalent to 12.2% (v/v) methanol?

12.2 mL methanol / 100 mL solution

Which expression is equivalent to 12.4% (m/m) NaCl?

12.4 g NaCl / 100 g solution

What mass of KBr is present in 75.0 mL of 0.250 M KBr solution?

2.23 g

What volume of methanol is present in 35.0 mL of 8.22% (v/v) ethanol solution?

2.88 mL

What volume of 4.00 M HCl should be diluted to prepare 75.00 mL of a 1.25 M HNO3 solution?

23.4 mL

What mass of NaCl is present in 50.0 mL of 1.05 M NaCl solution?

3.07 g

What mass of KBr is present in 20.0 mL of 15.5% (m/v) KBr solution?

3.10 g

What mass of NaCl is present in 50.0 mL of 6.25% (m/v) NaCl solution?

3.13 g

What mass of KBr is present in 25.0 g of 14.2% (m/m) KBr solution?

3.55 g

What volume of ethanol is present in 50.0 mL of 10.2% (v/v) aqueous solution?

5.10 mL

Which expression is equivalent to 5.45% (m/v) glucose?

5.45 g Glucose / 100 mL solution

Which expression is equivalent to 5.45% (v/v) ethanol?

5.45 ml ethanol/100 mL solution

What volume of 7.50 M HNO3 should be diluted to prepare 25.00 mL of a 2.00 M HNO3 solution?

6.67 mL

What mass of KBr is needed to prepare 35.0 mL of 1.80 M KBr solution?

7.50 g

What mass of NaCl is needed to prepare 65.0 mL of 2.25 M NaCl solution?

8.55 g

Which expression is equivalent to 8.84% (m/m) glucose?

8.84 g glucose/100 g solution

Which expression is equivalent to 8.92% (m/v) NaCl?

8.92 g NaCl/100 mL solution