How many grams of calcium will react with 10.0 grams of nitrogen according to the
equation: 3Ca+N2 --> Ca3N2

The answer to your question is 42.9 g of Ca

Explanation:

Data

mass of Ca = ?

mass of N₂ = 10 g

Balanced  chemical reaction

                 3Ca  +  N₂  ⇒   Ca₃N₂

Process

1.- Calculate the molar mass of the reactants.

Ca = 3(40) = 120 g

N₂ = 2(14) = 28 g

2.- Calculate the mass of Calcium using proportions and the molar mass of the reactants.

                    120 g of Ca 28 g of N₂

                       x               10 g of N₂

                               x = (10 x 120) / 28

                               x = 1200 / 28

                               x = 42.9 g of Ca

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.