One nucleus contains 31 protons and 40 neutrons. Another nucleus contains 31 protons and 41 neutrons. What can you conclude about the identity of these nuclei?

What is the formula for magnesium nitride

In ionic bonding A. the electrons are shared between the atoms. B. At least two of the above statements are correct. C. the bonding that occurs is usually between two nonmetal atoms. D.

A solution has a pH of 8. What kind of solution is it? A. strong acid B. weak acid C. strong base D. weak base

A scientist measures the pH of some rain water and finds that it is acidic. Which pH corresponds with the acidic quality of the rain water? A. 6 B. 7 C. 8 D. 9

How many mm Hg are in 55 psi?

How to tell difference between hydrogen gas and oxygen gas?

Why do atoms have different speed

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.

How would you present weight change if Earth had twice the mass that it does

Which types of orbitals are found in the principal energy level n = 4? A. S, d B. S, p, d, f C. S, p D. S, p, f E. S, d, f