When an atom in a reactant gains electrons, what happens to its oxidation number?
a).its oxidation number decreases.
b).its oxidation number doubles.
c).its oxidation number increases.
d).its oxidation number increases by one.
e).its oxidation number stays the same.

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?