Which chemical equation shows that the total mass during a chemical reaction stays the same?

How is breathing a part of cellular resperation

What is density a measure of.

What is the density of an object if it has a mass of 73 grams and a volume of 3.8cm3?

Boron has an atomic mass of 11. How many neutrons are in its nucleus? Use the periodic table if you wish.

Sodium plus chlorine gas yields sodium chloride

A 2.00 L container of gas has a pressure of 1.00 atm at 300 K. The temperature of the gas is halved to 150K, and the measured pressure of the same 2.00 Liter sample is 0.420 atm.

How many moles of ZnCl, will be produced from 23.0 g of Zn, assuming CuCl, is available in excess?

Glaciation in Alaska is a result of interactions between which of the following "spheres"? Check all that apply. A. biosphere B. exosphere C. geosphere D. cryosphere E. atmosphere F. hydrosphere

In the following equation: FeCl3 + O2 = Fe2O3 + Cl2, what is the limiting reactant if 4 moles of FeCl3 react with 4 moles of O2?

What are some special effects you can make with dry ice?