The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide (MgO). 2Mg + O2 mc019-1.jpg 2MgO Niven wants to calculate the mass of MgO that is produced by the burning of 28.0 g of Mg. What is the first step in Niven’s calculation? A. Balance the chemical equation. B. Convert grams of Mg to moles. C.Determine whether heat is given off by this reaction. D. Find the number of Mg atoms in the sample.

(1) Answers

For any Stoichiometric equation the first step always has to be balancing the equation in order to determine that the law of conservation of mass is fulfilled.

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