If 10 grams of NaCl is dissolved in 500 mL of water, what is the mass/volume per

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Question: If 10 grams of NaCl is dissolved in 500 mL of water, what is the mass/volume percent concentration? (2020) 2020

Options:

Correct Answer: 5%

Exam Year: 2020

Solution:

Mass/volume % = (mass of solute / volume of solution) * 100 = (10 g / 500 mL) * 100 = 2%.

If 10 grams of NaCl is dissolved in 500 mL of water, what is the mass/volume percent concentration? (2020) 2020

If 10 grams of NaCl is dissolved in 500 mL of water, what is the mass/volume percent concentration? (2020) 2020

Step 1: Identify the mass of the solute (NaCl) which is 10 grams.
Step 2: Identify the volume of the solution (water) which is 500 mL.
Step 3: Use the formula for mass/volume percent concentration: Mass/volume % = (mass of solute / volume of solution) * 100.
Step 4: Plug in the values: (10 g / 500 mL) * 100.
Step 5: Calculate the result: 10 g divided by 500 mL equals 0.02.
Step 6: Multiply 0.02 by 100 to get the percentage: 0.02 * 100 = 2%.
Step 7: Conclude that the mass/volume percent concentration is 2%.

Mass/Volume Percent Concentration – This concept involves calculating the concentration of a solution by expressing the mass of the solute as a percentage of the volume of the solution.