A student wants to make a 5.00% solution of potassium chloride using .0377 g of the substance.What mass of water will be needed to make the solution?

I don't want the answer just the formula please

To calculate the mass of water needed to make a 5.00% solution of potassium chloride, we first need to understand what a 5.00% solution means.

A 5.00% solution means that there is 5.00 grams of potassium chloride dissolved in 100 grams of the total solution. In other words, the mass of potassium chloride is 5.00% of the total mass of the solution.

We are given that the mass of potassium chloride is 0.0377 grams. Now, we can use this information to find the mass of the total solution.

Let's say the mass of the total solution is "x" grams. Since the mass of potassium chloride is 5.00% of the total mass, we can write the equation:

0.0377 g = (5.00/100) * x

To solve for "x", we can rearrange the equation:

x = (0.0377 g) / (5.00/100)

Calculating this, we find that x is approximately 0.754 grams.

Therefore, the mass of the total solution is 0.754 grams. To find the mass of water needed, we can subtract the mass of potassium chloride from the mass of the total solution:

Mass of water = Mass of total solution - Mass of potassium chloride
= 0.754 g - 0.0377 g
= 0.7163 g

So, approximately 0.7163 grams of water will be needed to make the 5.00% solution of potassium chloride.