Homework Help: chemistry

Posted by B on Tuesday, October 24, 2006 at 12:23am.

How would you solve this problem?...

magnesium metal reacts rapidly in hot water. Predict the mass of pericipitate that will form if a 2.0g strip of magnesium reacts completely with water.

*Use the 5-step method*

*Answer: 4.8g*

I dont know what the five step method is, and I suspect few do know.

Here is how to do it.
Balance the equation.
Determine the moles of Mg from the mass of Mg.
Determine the moles of MgO from the balanced equation.
Convert the moles of MgO to mass.

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