Question

a student adds 35 grams of sand to a container that holds 100 grams of water. the sand is then removed using a filter and weighed. the wet sand weighs 50 grams. which statements describe the results of this investigation? select two. a. when the water is weighed again, it will weigh 85 grams. b. when the water is weighed again, it will weigh 100 grams. c. the sand weighs more because mixing the sand with the water creates more sand. d. if the water and wet sand are weighed together, the total weight will be 150 grams. e. some of the water was absorbed by the sand, causing the sand to weigh more than before.

Explanation:

• Option A: The initial water is 100g, wet sand is 50g (sand + absorbed water). So water after filtration: \(100 - (50 - 35)= 85\)g. So A is correct.
• Option B: As calculated, water should be 85g, not 100g. B is wrong.
• Option C: Sand mass is 35g, wet sand is 50g (so absorbed water is 15g), sand mass doesn't increase. C is wrong.
• Option D: Water (100g) + wet sand (50g) = 150g. D is correct.
• Option E: Sand's mass is 35g, wet sand is 50g (so water absorbed is 15g, sand mass doesn't change). E is wrong.

Answer:

A. When the water is weighed again, it will weigh 85 grams.
D. If the water and wet sand are weighed together, the total weight will be 150 grams.