Given:

cac2 + n2 → cacn2 + c

in this chemical reaction, how many grams of n2 must be consumed to produce 265 grams of cacn2? express your answer to three significant figures.

the reaction requires how many grams of n2?

92.6 g.

Explanation:

CaC₂ + N₂ → CaCN₂ + C.

n = mass / molar mass = (265.0 g) / (80.102 g/mol) = 3.308 mol.

∵ 1.0 mole of N₂ produces → 1.0 mole of CaCN₂.

∴ 3.308 mole of N₂ produces → 3.308 mole of CaCN₂.

∴ The grams of N₂ = n x molar mass = (3.308 mole)(28.0 g/mol) = 92.63 g = 92.6 g.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

1.solid

2.carbon dioxide

3.helium