The atomic number of an atom is

a) The mass of the atom

b) The number of protons added to the number of neutrons

c) The number of protons

d) Negatively charged

Which ocean zone has the lowest water pressure? Hadal zone Mesopelagic zone Abyssopelagic zone Epipelagic zone

How is energy related to the change of state represented by the model? a. Atoms gain energy as a solid changes to a gas. b. Atoms gain energy as a liquid changes to a gas. c. Atoms lose energy as a solid changes to a gas. d.

A noble gas consists of three isotopes of masses of 19.99 amu, 20.99 amu, and 21.99 amu. the relative abundances of these isotopes are 90.92%, 0.257%, and 8.82% respectively. what is the average atomic mass of this noble gas? what noble gas is this?

Who re-introduces Democritus' theory of atoms back into modern science in the 1800's? A. John Dalton B. Neils Bohr C. James Chadwick D. J. J. Thompson Reset Selection - е E a hop

Which best describes the asteroid belt A. another name for the Oort cloud B. The region where comets originate C. large chunks of gas, dust and ice D. millions of small rocky objects

In Flask A, you reacted 7.23 g Mg with 1.05 mol HCl. In Flask B, you reacted 1.22 g Mg with 1.35 mol HCl. Which balloon will inflate the most?

I have 2 electrons is the first shell, 8 in the second, and 6 in the third

The production of plastics makes life, so it benefits society. On the other hand, the production of plastics causes air and water, so it also harms society.

The total number of moles represented by 20 grams of CaCO3 is

Particles of matter how have both potential and kinetic energy is that true or false?