What do you know about a chemical compound by looking at its chemical formula? the properties of the molecules in the compound how the compound reacts with other compounds how many molecules are in a sample the number and kinds of atoms in the compound

Option (d) is the correct answer.

Explanation:

A chemical formula is a symbolic representation of a compound or molecule that shown how many atoms of an element are present. Also, it helps in known the kind of atoms present in a compound.

For example, chemical formula of calcium chloride is .

So, it shows that there are two chlorine atoms and one calcium atom.

Also, it shows that bonding is taking place between a metal and a non-metal.

Thus, we can conclude that we get to know about the number and kinds of atoms in the compound by looking at its chemical formula.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).