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Hey Marky! Did you hear that the Chemistry Club posted another problem? I'm gonna get the right answer again and win some prize.
Well, I haven't seen the problem yet. Since you're the top of the class Cassy, I expect you'll know how to answer it again. Shall we see it together?
Problem of the WeekMagnesium reacts with Nitrogen gas to produce Magnesium nitride. Write and balance the chemical equation.
Oh! There it is. Can you show me how to solve it future chemist?
Sure, I'd love to. Come, future lawyer. I'll just get my pen and some paper, then I'll show you.
Magnesium + Nitrogen gas Magnesium nitride
Okay. First step's done Cassy.
Step 1. Convert the given problem into word equation.
Mg(s) +N2(g) Mg3N2(s)
Magnesium + Nitrogen gas Magnesium nitride
Marky, remember that nitrogen is a diatomic substance so its subscript is 2.
Step 2. Convert the word equation into a chemical equation.
Mg(s) +N2(g) Mg3N2(s)
3Mg(s) +N2(g) Mg3N2(s)
Magnesium + Nitrogen gas Magnesium nitride
Now let's do some checking!
Step 3. Balance the given chemical equation written in Step 2 by adding coefficient after the chemical symbol or chemical formula.
CHECKING:ReactantElementProduct3= (3)1Mg32N2
Mg(s) +N2(g) Mg3N2(s)
3Mg(s) +N2(g) Mg3N2(s)
Final Answer:3Mg(s) +N2(g) Mg3N2(s)
Magnesium + Nitrogen gas Magnesium nitride
Step 4. Do the checking and box the final answer.
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