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Pure magnesium metal is often found as ribbons and can easily burn in the presence of...

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Chemistry

Pure magnesium metal is often found as ribbons and can easilyburn in the presence of oxygen. When 3.50 g3.50 g of magnesiumribbon burns with 8.91 g8.91 g of oxygen, a bright, white light anda white, powdery product are formed.

1. Enter the balanced chemical equation for this reaction. Besure to include all physical states.

2. What is the limiting reactant?

3. If the percent yield for the reaction is 79.9%,79.9%, howmany grams of product were formed?

4. How many grams of the excess reactant remain?

Answer & Explanation Solved by verified expert
4.1 Ratings (645 Votes)
12Mgs O2g MgOs2 moles of solid Mg reacts with 1 mole of gaseous O2to form 2 moles of solid MgO2Mass of Mg 350 gMolar mass of Mg 243 gmolMoles of Mg mass of Mgmolar mass of Mg 350 g243 gmol 0144 molMass of O2 891 gMolar mass of O2 320 gmolMoles of O2 mass of O2molar mass ofO2 891 g320 gmol 0278    See Answer
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