Which statement accurately describes an object's weight and mass? A. Both its weight and its mass are the same everywhere in the
universe.
B. Its weight is the same everywhere in the universe, but its mass is
not.
C. Its weight changes with gravitational force, but its mass does not.
D. Its mass changes with gravitational force, but its weight does not.

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?