Answer:
3.44 kg
Step-by-step explanation:
To find the mass of a 1.80% NaCl solution needed to provide 62.0 g of NaCl, you can use the following equation:
Mass of solution (in grams) = Mass of NaCl / (Percentage of NaCl / 100)
Let's calculate it:
Mass of solution (in grams) = 62.0 g / (1.80 / 100) = 62.0 g / 0.018
Now, calculate the mass of the solution:
Mass of solution (in grams) = 62.0 g / 0.018 = 3,444.44 grams
To express this in kilograms, divide by 1,000 (since 1 kilogram = 1,000 grams):
Mass of solution (in kilograms) = 3,444.44 grams / 1,000 = 3.44 kg
So, you would need 3.44 kilograms of the 1.80% NaCl solution to provide 62.0 grams of NaCl.