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3 years ago

To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?

Chemistry

1 answer:

Yuri [45]3 years ago

4 0

Explanation:

The given data is:

The mass% of a solution is 7.

Mass of solution =450g

The mass of salt required can be calculated as shown below:

$mass percent =(mass of solute/mass of solution )x100\\$

Substitute the given values in this formula to get the mass of solute that is salt:

$mass percent =(mass of solute/mass of solution )x100\\\\7=\frac{mass of salt}{450g} x100\\=>mass of salt=7x450g /100\\mass of salt=31.5g$

Mass of salt =31.5g

Mass of solvent that is water = 450g-31.5g=418.5g

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To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?​

To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?