Respuesta :

1 mol of co2 is 44.01 grams. So we know that 70/44.01= 1.59 moles of co2 were consumed

1.59 mol co2 / 4 mol co2 = mol c2h2 / 2 mol c2H2

So mol of c2h2 is .79 mol
There is 27.04 grams in a mol of c2h2,
So we have 0.79*27.04=21.5 grams of c2h2