Reactants are the substance that undergo a change in a chemical reaction while products are what is produced after a reaction. don't have time to write a reaction.
Answer:
D. Protons ; neutrons.
Explanation:
For a given element the number of protons is fixed, but the number of neutrons differ because the element usually consist of a number of isotopes.
For example Carbon has isotopes which contain 12, 13 and 14 neutrons.
So that is why you average the number of neutrons to find the approximate atomic mass..
Co= 59g
S=32g
59+32=91g/mol
It is true. Since it is very reactive with oxygen and water, it is kept in kerosene or some other some other oil
There are 12H 2Fe 15O and 3C
