Question

What is the percent of Li in Li3N ? Please!!

Answer 1

I think it maybe 59.7852%

Answer 2

Answer: Li percentage in $Li_3N$ is 59.8%.

Explanation: The question asks to calculate the mass percentage of Li in $Li_3N$ .

The formula used for mass percentage of an element in a compound is:

mass percentage = $(\frac{element mass}{compound mass})*100$

Atomic mass of Li is 6.94 and atomic mass of N is 14.0.

There are three Li in the given compound. So, the mass of Li in the compound is = 3(6.94) = 20.82

Mass of compound = 20.82 + 14.0 = 34.82

Mass percentage of Li = $(\frac{20.82}{34.82})*100$  = 59.8%

Hence, the percentage of Li in $Li_3N$ is 59.8%.