Question #67709

1 Answer
Sep 8, 2017

The mass of the compound is irrelevant in this problem, probably meant to confuse us.

6.78g * (CO_2)/(44.0g) approx 0.154mol6.78gCO244.0g0.154mol
1.94g * (H_2O)/(18.0g) * (2H)/(H_2O) approx 0.216mol 1.94gH2O18.0g2HH2O0.216mol
0.432g * (N_2)/(28.0g) * (2N)/(N_2) approx 0.0309mol0.432gN228.0g2NN20.0309mol

Divide every number that's larger than the smallest amount of moles and we get...

C_5H_7NC5H7N