What is the number after an elements name, representing the sum of its protons and neutrons

How does distance affect gravitational force

What might happen if the earth exceeds its carrying capacity

A star is born whenever a nebula expands ... True Or False?

Energy comes in different forms. Check each box that applies. Running a mile involves electromagnetic energy. thermal energy. solar energy. mechanical energy. chemical energy. nuclear energy.

Why do the nuclides that are used as radiotracers have short half-lives?

Calculate the amount of heat required to raise the temperature of an 64 g sample of water from 32 ∘C to 69 ∘C.

Why will oil and water never mix second law of thermodynamics?

A bromine atom in the excited state could have an electron configuration of

Which of the following is an electrolyte?

Explain the relationship between the spinning pinwheel, the X, and the electron cloud