A Chemical formula tells you the ratio of elements in substance, but it doesn’t tell you? what doesn’t chemical formula tell?

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: