Rolf prepares four solutions using different solutes as shown in the table below. Solution
Preparation
Solubility of the solutes
A
Rolf added 20 g of solute to 100 g The solute in solution A has a
of water and mixed the solution solubility of 37 g/100 g H20 at 20°C!
B
Rolf added 10 g of solute to 100 g The solute in solution B has a
of water and mixed the solution. solubility of 10 g/100 g H20 at 20°C.
С
Rolf added 65 g of solute to 100g The solute in solution C has a
of water, mixed the solution, and
then heated the solution,
solubility of 32 g/100 g H20 at 20°C
D
Rolf added 7 g of solute to 100 g
of water, mixed the solution, and
then heated the solution
The solute in solution D has a
solubility of 4 g/100 g H20 at 20°C.
Which solution is unsaturated?

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.