Answer :
Final answer:
To find the % (m/m) of a solution, divide the mass of the solute by the total mass of the solution and multiply by 100.
Explanation:
To calculate the % (m/m) of a solution, you need to divide the mass of the solute (what is being dissolved) by the total mass of the solution and then multiply by 100. In this case, the mass of the lithium fluoride is 41.5 grams and the mass of the water is 98.5 grams. So the total mass of the solution is 41.5 + 98.5 = 140 grams.
The % (m/m) of the lithium fluoride solution is therefore (41.5 / 140) * 100 = 29.64% (m/m).
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