Balance the following equation with the smallest whole number coefficients. choose the answer that is the sum of the coefficients in the balanced equation. do not forget coefficients of "one."
cr2(so4)3 + rboh cr(oh)3 + rb2so4
(a) 10
(b) 12
(c) 13
(d) 14
(e) 15

The answer for #3 is c but i don't know why

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

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.