ch9 mgo stoch labm

MAGNESIUM OXIDE STOICHIOMETRY LABM NAME____________

PURPOSE: Burn magnesium, calculate moles

PROCEDURE: magnesium is placed in a crucible, and heated, as before

DATA:

Crucible mass ___________

Mg and crucible mass _______

MgO and crucible mass __________

CALCULATIONS AND CONCLUSIONS:

Mass of Mg used: ________

Mass of MgO produced _________

Balanced chemical equation with states _______________________________________

What were the reactants?______________________ what was the product?___________

Ways to improve the experiment: ___________________________________________________

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The limiting reactant is ___________ and the excess reactant is ______________, and the evidence is ___________________________________________________________

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one mole of magnesium weighs ________g

The molar mass of Magnesium oxide is __________________g

In this reaction, does the material in the crucible gain or lose mass? _________ Why?

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Is the law of conservation of mass violated? _______ Explain ________________

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When wood burns does it appear to gain or lose mass? _____ Why?_________

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What is the white smoke?_________________________________

What are the reactants and products when methane, CH4 , is burned?

Chemical equation_____________________________________________________