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Alex
3 years ago
5

A latch on a desk drawer has two magnets designed to attract each other and keep the door shut. However, the magnets repel each

other on your desk. Can this be fixed? If so, how?
A) It cannot be fixed in any way.
B) It can be fixed by turning both magnets around.
C) It can be fixed by removing one of the magnets.
D) It can be fixed by turning one of the magnets around.
Chemistry
2 answers:
Sindrei [870]3 years ago
7 0

Answer:D

Explanation:

wariber [46]3 years ago
6 0
The answer would be D
Hope this helped
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<h2>Question:</h2>

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Calculate the mass of Na2O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reacti
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Answer:

The mass of Na₂O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reaction is 5.39 grams.

Explanation:

You know  the balanced reaction:

4 NA + O₂ ⟶ 2 Na₂O

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) react and are produced:

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the molar mass of the compounds participating in the reaction is:

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Then by stoichiometry of the reaction they react and are produced:

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Then you can apply the following rule of three: if 92 grams of Na produce 124 grams of Na₂O, 4 grams of Na, how much mass of Na₂O does it produce?

massofNa_{2}O =\frac{4 grams of Na*124 gramsofNa_{2}O }{92 grams of Na}

mass of Na₂O=5.39 g

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