The element rhenium (Re) exists as two stable isotopes and 18 unstable isotopes. Rhenium-185 has in its nucleus

a. 75 protons, 75 neutrons
b. 75 protons, 130 neutrons
c. 130 protons, 75 neutrons
d. 75 protons, 110 neutrons
e. not enough information

d. 75 protons, 110 neutrons

Explanation:

In an isotope, the number next to the number of the atom is the mass number (Protons + neutrons). Rhenium has as atomic number 75, that means Rhenium has 75 protons. As atomic mass, 185, is the sum of protons and neutrons, number of neutrons is:

185 - 75 = 110 neutrons

Thus, right answer is:

d. 75 protons, 110 neutrons

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation: