GED Science : Solutions

Study concepts, example questions & explanations for GED Science

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Example Questions

Example Question #1 : Making Solutions

A student is asked to make of NaCl solution. The student is given a stock solution of NaCl. What volumes of stock NaCl solution and pure water could be used to make the desired final solution?

Possible Answers:

Correct answer:


Convert liters to mL:

This is the TOTAL volume of the solution. Next, determine how much NaCl to add.

Therefore,  of stock NaCl must be added. Subtract this volume from to determine the amount of water used in the final solution.

Example Question #1 : Concentration

6g of sugar is dissolved in 250mL of water. What is the percent concentration of sugar in mass per unit volume?

Possible Answers:

Correct answer:


Concentration can be measured in a variety of ways. To find the percent mass per unit volume, we must divide the mass of solute by the volume of solvent and multiply by 100%.

We know our mass is 6g and our volume is 250mL. Use these values in the equation to find the concentration.

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