Answer:
1 cg = 10 mg
Explanation:
So, 89cg = 89 * 10 = 890mg!
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I think it might be a gas was formed.
Hope I'm right and it helps you out!!
Answer:
60.30 percent
Explanation:
The percent composition of magnesium in magnesium oxide with a chemical formula of MgO is 60.30 percent.
You find the molar mass of NaCl first, by adding the weight of both to get 58.44g.
Then you set up the equation with what is given:
2.4mol NaCl and multiply it by 58.44g NaCl to get your answer= 140.256g