Answer:
Ni C03 ---> CO2 + NiO
Explanation:
When heating nickel carbonate at elevated temperatures, 400 ° C for example, decomposes giving as products carbon dioxide and nickel oxide.
By increaing the size of container
<em>i think the answer is b </em>
the answer is B =the weighted average of the masses of the isotopes of the element
200 / 0.00000000000000000004
5 x 10^21 molecules