If a neutral atom of oxygen has 8 protons, 8 electrons, and 7 neutrons, what number is the mass number of this atom?

A. 8

B. 15

C. 16

D. 23

Where does radioactivity come from? a the decay of certain atomic nuclei b the atom losing electrons c radioactive material d U-238

What happens to the matter (bodies) of organisms after they die?

How do I know how many electrons an element has to gain and l ose to become stable

What is 1.5 x 10^3 in standard notation

Jaden listed the similarities of using coal, natural gas, and petroleum to generate electricity. Coal, natural gas, and petroleum: - use turbines - require heat - convert electrical energy to kinetic energy - produce pollution in the form of smoke

What is 19 hundred thousandths in scientific notation

There state of matter that keeps its shape and volume when it is placed in a container

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L