Question

A.1- how many moles of sodium chloride would be needed to prepare a 0.058 M of NaCl solution in a 100-mL Volumetric Flask.

2- how many grams of sodium chloride would need to be weighed out to make the 0.058 M NaCl Solution in 100-mL Volumetric Flask.

3- In 1.000 liters of 0.058 M NaCl solution, how many moles of NaCl are present?

4- In 1.000 liters of a 0.058 M NaCl solution, how many grams of NaCl are present?

B. A standard 18-foot round Above Ground Pool with 52-inch walls holds 8602 gallons of water (assuming the actual water depth is 6 inches lower than the wall height).

1- What is the volume of water in liters in this above ground pool?

2- If you were to make a 0.058 M NaCl solution in the 18 foot above ground pool, how many moles of NaCl would you need?

3- How many grams of NaCl would you need for your 18 foot above ground pool?

4- How many pounds of NaCl would you need for your 18 foot above ground pool?

Please show all the calculations

Answer 1

A.1- how many moles of sodium chloride would be needed to prepare a 0.058 M of NaCl solution in a 100-mL Volumetric Flask.

Moles of solute = Molar Concentration Liters of solution = 0.058 mol/L 0.1 L = 0.0058 moles

2- how many grams of sodium chloride would need to be weighed out to make the 0.058 M NaCl Solution in 100-mL Volumetric Flask.

Mass of NaCl = moles of NaCl Molar mass of NaCl = 0.0058 moles 58.5 g/mol = 0.34 g

3- In 1.000 liters of 0.058 M NaCl solution, how many moles of NaCl are present?

Moles of solute = Molar Concentration Liters of solution = 0.058 mol/L 1.000 L = 0.058 moles

4- In 1.000 liters of a 0.058 M NaCl solution, how many grams of NaCl are present?

Mass of NaCl = moles of NaCl Molar mass of NaCl = 0.058 moles 58.5 g/mol = 3.4 g