What percentage mass of magnesium oxide is magnesium?

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What percentage mass of magnesium oxide is magnesium ...

What percentage mass of magnesium oxide is magnesium? and What percentage mass of magnesium oxide is oxygen? ... to find mass percent of Mg, ...

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Answer:

Yup! It's easy, Rima. The total mass of one mole of magnesium oxide is just the sum of the atomic weights...

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Answer:

Since the total mass is .300 + .497 = .797 grams, the percentage of magnesium is .300 / .797 x 100 ...

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Answer:

Separate a known mass of molten MgO using electrolysis. Measure the volume of oxygen gas and mass of...

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Determining the Empirical formula of Magnesium Oxide?

how would i get the percentage composition & empirical formula of the magnesium oxide? this is the info i have : ------------------------------- - Measured Mass (g) Dry Crucible and lid ---------------------15.22 g Crucible, lid and Mg ribbon --...

Answer:

It doesn't look like your data is really accurate enough to get this right. If it is more important...

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Magnesium Oxide experiment...?

If a students were given different amounts of Magnesium to burn to make Magnesium Oxide, would you expect the percentage of magnesium in their MgO to be different or similar? Would this have anything to do with Law of Constant Composition or something...

Answer:

%of Mg in all the oxides formed will be same because of the law of Constant composition which states...

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When a mass of 12.7 g of magnesium is burned in air, it combines with oxygen to form magnesium oxide...?

When a mass of 12.7 g of magnesium is burned in air, it combines with oxygen to form magnesium oxide. a) Write the chemical equation for this reaction. b) What mole ratios of reactants and products are indicated by the balanced equation? c) Determine...

Answer:

a) 2 Mg + O2 → 2 MgO c) Molar mass of Mg is 24.30506 g/mol. Molar mass of O2 is 31.99886 g/mol...

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A 10.0 g sample of magnesium is completely burned in the presence of air to form magnesium oxide. The mass of?

A 10.0 g sample of magnesium is completely burned in the presence of air to form magnesium oxide. The mass of magnesium oxide must be A. equal to 10.0 g. B. equal to 42.0 g. C. less than 10.0 g. D. greater than 10.0 g. E. equal to 26.0 g

Answer:

D. greater than 10.0 g. Because the oxygen that combines with the magnesium will add to its weight.

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What is the percent by mass of oxygen in magnesium oxide?

Magnesium combines with oxygen to form magnesium oxide. If 17.56 g of magnesium reacts completely with 7.83 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?  

Answer:

Magnesium oxide is MgO Percent O = 16.0 / (24.3 + 16.0) x 100 = 39.7% You wrote "17.56 g of magnesium...

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Answer:

Mg + O2 ---> MgO Mass of magnesium + Mass of oxygen --------> Mass of magnesium oxide 0.24g +...

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