Question

How many grams of NaCl are needed to prepare of a solution? 1500 grams 15 grams 5.8 grams

Answer 1

To prepare the solution, you would need to weigh out 150 grams of NaCl and add it to 2850 grams of water.

Step-by-step explanation:

You would need to weigh out 150 g of NaCl and add it to 2850 g of water. Notice that it was necessary to subtract the mass of the NaCl (150 g) from the mass of solution (3000 g) to calculate the mass of the water that would need to be added.

Answer 2

To prepare a 5% NaCl solution with a total mass of 3000 g, you would need to weigh out 150 g of NaCl and add it to 2850 g of water.

Step-by-step explanation:

To determine how many grams of NaCl (sodium chloride) are needed to prepare a solution, we need to use a conversion factor based on the desired mass percent of the solution. If we have a 5.00% NaCl solution, this means that there are 5.00 g of NaCl for every 100 g of solution.

Given a total solution mass of 3000 g, we can calculate the mass of NaCl needed by multiplying the mass of solution with the conversion factor:

5.00 g NaCl / 100 g solution = X g NaCl / 3000 g solution

By cross-multiplication, we find that X, the mass of NaCl needed, is 150 g. Therefore, you would need to weigh out 150 g of NaCl and then add it to enough water to make a final solution with a mass of 3000 g. This involves subtracting the mass of NaCl from the total solution mass to find the mass of water needed, which is 2850 g.