PLEASE HELP WILL MARK BRAINLIEST

Hydrofluoric acid reacts readily with silica in glass to produce
hexafluorosilicic acid (H2SiF6).

SiO2 (s) + 6HF (aq) H2SiF6 (aq) + 2H2O (l)

If 60 g of SiO2 and 60 g of HF react

(please answer A, B, C and D)
a. Determine the limiting reactant.

b. Determine the mass of the excess reactant.

c. Determine the Theoretical yield of H2SiF6.

d. determine the percent yield if the actual yield is 48.5 g H2SiF6.