16. Type the correct answer on the line below. Given :CaC2 + N2 CaCN2 5 points + 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 grams of N2.
Your answer
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Mass = 80.6 g

Explanation:

Given data:

Mass of N₂ consumed = ?

Mass of CaCN₂ formed = 265 g

Solution:

Chemical equation:

CaC₂ + N₂      →       CaCN₂ + C

Number of moles of CaCN₂:

Number of moles = mass/molar mass

Number of moles = 265 g/ 92.11 g/mol

Number of moles = 2.88 mol

Now we will compare the moles of CaCN₂ and N₂.

                               CaCN₂            :            N₂

                                   1                   :              1

                                  2.88              :            2.88

Mass of N₂:

Mass = number of moles × molar mass

Mass = 2.88 mol × 28 g/mol

Mass = 80.6 g

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