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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?

ABalance the chemical equation.
BConvert grams of Mg to moles.
CDetermine whether heat is given off by this reaction.
DFind the number of Mg atoms in the sample.

Verified Answer :

Hagrid

The first step Niven has to do
in his calculation is to Balanced the chemical equation. The answer is letter

AThe key in the balancing of chemical reaction is to make sure that you got

the exact chemical formula of the substance that is reacting and the yielded
product. After getting the formula, identify first the hardest element/atom to
be balanced such as Na, Zn, Cl, etc. Then proceed to the easier ones such as O,
H. Make sure to not the atoms present in the molecule of the substance.

jadec098

Answer:

B. Convert grams of Mg to moles

Explanation:

Hope this helps :)

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