Question

Find the mass percent of a solution that contains 10.1 g NaCl and 142 g of water

a.) 14.1%
b.) 15.0%
c.)6.64%
d.)7.11%
e.) none of these

Answer 1

The mass percent of NaCl in a solution with 10.1 g NaCl and 142 g water is calculated as 6.64% by dividing the mass of NaCl by the total mass of the solution and multiplying by 100%.

Step-by-step explanation:

To find the mass percent of a solution that contains 10.1 g NaCl and 142 g of water, you combine the masses of the solute (NaCl) and solvent (water) to get the total mass of the solution. The mass percent is then calculated by dividing the mass of the solute by the total mass of the solution and then multiplying by 100%.

In this case, the total mass of the solution is 10.1 g (NaCl) + 142 g (water) = 152.1 g. The mass percent of NaCl in the solution would be:
(10.1 g NaCl / 152.1 g solution) x 100% = 6.64%.

This calculation shows that the mass percent of NaCl in this particular solution is 6.64%, assuming the given values are correct and that there are no other components in the solution.