Nitrogen has a proton number of 7, it also hos 7 neutrons What is the nucleon number of nitrogen?

What color does litmus paper turn in a base?

How many moles of magnesium oxide are there in 2.50 * 10^25 formula units of MgO?

What happens when an atom has more electrons that can fit in one energy level

Which of the following is not a substance? 1. methanol 2. milk 3. copper 4. water

4. Among the following elements, which one has the most ionization energy? A) Cl B) Ba C) Si D) Br

A gas obeys the ideal-gas equation of state P V = N k T, where N = n NA is the number of molecules in the volume V at pressure P and temperature T and n is the number of gm-moles of the gas.

76. Which of the following choices is not an example of an adaptation? A. Nocturnal animal species have large eyes. B. One member of a wolf litter is born with shorter legs than its siblings. C.

Which is more dense a pound of rice or a pond of cement

An essay that is 530 words over an experiment. EX. Coke vs Mento Invisible Ink

K2so4 is a strong electrolyte. determine the concentration of each of the individual ions in a 0.600 m k2so4 solution.