Percent by Mass and Concentration

What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?

Based on the given problem what is the amount of solution?

• 5g iron(II) sulfate

• 75g water

• 80g solution

• 6.25%

What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?

Based on the given problem what is the amount of solute?

• 5g iron(II) sulfate

• 75g water

• 80g solution

• 6.25%

What is the percent by mass of 5.0 g of iron (II) sulfate dissolved in 75.0 g of water?

Based on the given problem what is the solvent?

• iron(II) sulfate

• water

• solution

• all answers are correct

Which solution is more concentrated?

• 10g salt in 100ml water

• 20g salt in 100ml water

• 30g salt in 100ml water

• 40g salt in 100ml water

A solution is made by adding 25 mL of benzene to 80 mL of toluene. What is the volume of solution?

• 25ml solution

• 80ml solution

• 55ml solution

• 105ml solution

How do we compute for percent by mass?

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What mathematical operation is used to get the amount of solution?

• addition

• subtraction

• division

• multiplication

In what way can we increase the concentration of solution?

• A. add more solute

• B. add more solvent

• either A or B

• neither A or B

If a solution have a less amount of solute, it is said to be?

• diluted

• concentrated

• saturated

• supersaturated

How do we compute for percentage by volume?

• volume of solute divided by volume of solution then multiply by one hundred percent

• volume of solution divided by volume of solute then multiply by one hundred percent

• add volume of solute and solvent then multiply by one hundred percent

• multiply volume of solute and solvent then divide by one hundred percent