Moises performs a chemical reaction according to the reaction below. If he started with 15.31 g of copper and 1.50 g of oxygen. Using the Law of Conservation of mass, what would be the mass of the product
be?
2Cu + O2➡️ 2Cu
A. 15.31 g
B. 16.89
C. 13.81 g
D. 1.5gO

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand