Answer the following questions about macromolecules. darken the circle or circles that correspond to your
answer choice(s).
1. which of the following accurately describes how carbohydrates and lipids differ?
lipids store energy, but carbohydrates do not.
lipids contain nitrogen, but carbohydrates do not.
© carbohydrates are soluble in water, but lipids are not.
carbohydrates are digested with enzymes, but lipids are not.

Mass of CuSO₄ you need to prepare a 80% (w/w) solution in 25mL of water is 100g

Explanation:

A solution of 80% (w/w) means you have 80g of solute (CuSO₄, in this case) per 100g of solution (CuSO₄ + water)

Density of water is 1.00g/mL. That means you have 25g of water, thus, to prepare a solution of 80% in mass you need:

80% = Mass CuSO₄ / (Mass CuSO₄ + 25g)

20g + 0.8Mass CuSO₄ = Mass CuSO₄

20g = 0.2 Mass CuSO₄

100g = Mass CuSO₄

Thus, mass of CuSO₄ you need to prepare a 80% (w/w) solution in 25mL of water is 100g