The first one is the answer
isotopes of an atom have different number of neutrons . the number of protons are not different in isotopes of an atom
The number of protons and neutrons combined in an atom is called the mass number.
Wouldn’t it be half of each? For 36 I guess is 18 and 54 will be 27, (NOT SURE)
Answer:
c.- How much of the reactants are needed and how much product will made.
Explanation:
The moles is the matter unit used in chemistry to simplify some calculations, instead of using grams. Also the moles are very useful because the chemical reaction can be balanced.
When a Chemical reaction is balanced, then it can be easily to calculate how many moles are necessary to add in a process to obtain a quantity of grams of a product.
