Answer:
Boiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O).
Explanation:
Answer:
Explanation:
It is to keep the mixture homogeneous
H20 can be a molecule or a compound because it is made up of Hydrogen(H)
and oxygen (O)
Answer:
5400 cans
Explanation:
First we convert the total weight, 1 ton, to grams:

Now we need to know the mass of aluminum:

Now we make the relation between the mass of aluminum in 1 ton of the earth's crust and the mass of aluminum per can:

Answer:
when cell is exposed to radiation we get brain tumour or cancer.