Answer:
c. chemistry
Explanation:
it uses science and math which are based on facts.
Calcium chloride contains only one calcium and 2 chloride atom thus it's ionic formula would be CaCl2.
Answer:
Explanation:
%Carbon = mass of carbon / mas of C13H18O2) X100%
= 13X12/ (13X12+18+2X16)X100%
= 156/206) X100%= 75.7%
Answer:

Explanation:
The hydrocarbon shown has a double bond. Hydrocarbons with double bonds are known as alkenes.
Cyclic alkanes have cyclic structure.
Alkanes only have single bonds.
Alkynes have triple bonds.
I think you divide something