3 ..............................
The answer is b)h2o is a compund
The SI unit for amount of substance is the mole. It has the unit symbol mol. <span>The mole is defined as the amount of substance that contains an equal number of elementary entities as there are atoms in 12g of the </span>isotope carbon-12<span>.</span>
Answer:
Ecosystem
Explanation:
I got the answer from the Mcgrawhill textbooks.
