Two 250 ml samples of water are drawn from a deep well bored into a large underground salt (naci) deposit sample #1 is from the top of the well, and is initially at 42 °c. sample #2 is from a depth of 150 m, and is initially at 8 °c. both samples are allowed to come to room temperature (20 °c) and 1 atm pressure. an naci precipitate is seen to form in sample # 1
a. 1. a bigger mass of nacl precipitate will form in sample #2.
b. a smaller mass of nacl precipitate will form in sample #2.
c. the same mass of nacl precipitate will form in sample #2. o o
d. no precipitate will form in sample #2.
e. i need more information to predict whether and how much precipitate will form in sample #2.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.