Chem multiple choice help?
I am almost certain it is calcium
When calcium is allowed to react with nitrogen, N2, calcium nitride is formed, as shown in the following balanced chemical equation: 3Ca + N2 → Ca3N2
If 24.0 g of calcium and 12.0 g of nitrogen are available for this reaction, the limiting reagent will be
c) calcium nitride
d) both calcium and nitrogen will be consumed completely
e) cannot be determined
- Dr WLv 74 weeks ago
compare the ratios of mole / coefficient of reaction for each reactant. Whichever is lower is the LR
.. Ca..(24.0g / 3) * (1 mol / 40.1g) = ?
.. N2. (20.01g / 1) (1mol / 28.02g) = ?
.. which is lower?
- oeman50Lv 74 weeks ago
Just by looking at the amounts, I would guess calcium, since you need 3 moles of Ca per mole of N2. To confirm:
24.0 g / 40g/mol = 0.6 mole of Ca
12 g / 28 g/mol = 0.43 mol
So you would need 3 x 0.43 = 1.29 moles of Ca to react completely with the N2, so a. is the answer.