Which of the following is NOT an indicator of a chemical change?

color change

change in volume

temperature changes

gas formation

What is the formula mass of mgcl2

How many oxygen atoms are contained in 2.74 g of Al2 (SO4) 3?

What type of compound is CuSO4? A.) Monotomic ionic B.) Polyatomic covalent C.) Polyatomic ionic D.) Binary molecular

5. Given the reaction: 2 H2 + O2 + 2 H2O The total number of grams of O2 needed to produce 54 grams of water is 48

The columns in the periodic table are also called A. sets. B. periods. C. families. D. energy levels

Rutherford's famous gold foil experiments shot heavy particles at a thin sheet of gold foil. What did he observe, and why did these observations eventually result in the addition of a nucleus to the atomic model?

In the Periodic Table, what is the relationship between two elements that are placed side-by-side in a row? A. The element on the left has one more electron. B. The element on the left has one more proton. C.

What are two traits of pseudoscience

What will happen if an electric current is flowing through a cord and a magnet is brought near the cord?

Lithium has two isotopes. Li-6 and Li-7. Li-6 mass = 6.015121amu Li-7 mass = 7.016003amu Lithium Mass = 6.94049amu What is percent abundance of Li-6? I know that there is an equation: 6.