Question

How Is a compound different from a mixture?
it is made of one substance
It cannot be made of organic materials
It cannot be broken down
It cannot be separated by a physical change
I don't know

 This formula shows the chemical reaction that occurs when the body breaks
down sugar. The products are carbon dioxide and water.
C6H12O6
+ 6O2
6CO2+ 6H2O
How many carbon atoms are needed in this reaction?

1
2
6
12

I don't know

The chemical formula for baking soda is NaHCO3
. How many sodium (Na) atoms are there in one molecule of baking soda?

1
2
3***
4

Which chemical formula shows 2 atoms of iron (Fe) and 3 atoms of oxygen (O)?

FeO3
Fe2O
Fe2O3****
Fe3O2

Please help me, I'm usually well at Science but right now I'm sick, I have a headache,and I'm having a lot of trouble on these questions.

Thanks,

~Anonymous

Answer 1

Please!

Answer 2

Wait until you feel better before you try to answer these questions.