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Arisa [49]
3 years ago
8

Twenty-four grams of magnesium metal reacts with sixteen grams of oxygen gas to form magnesium oxide. According to the law of co

nservation of mass, how much magnesium oxide will there be after the chemical change is complete?
24 g
30 g
40 g
16 g
Chemistry
2 answers:
DedPeter [7]3 years ago
4 0
The law of conservation of mass dictates that the total mass of reactants must be equal to the total mass of the products. Thus:
mass(MgO) = mass(Mg) + mass(O)
mass(MgO) = 24 + 16
mass(MgO) = 40 g

The third option is correct.
guapka [62]3 years ago
3 0

Answer:

40 g

Explanation:

a

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Answer:

2CO 2NO → 2CO2 N2 : Balanced

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Explanation:

1.) 2CO 2NO → 2CO2 N2

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The amount of atoms of each element is the same on both sides of the equation therefore the equation is balanced.

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