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Charra [1.4K]
3 years ago
11

When earth is closest to the sun, the northern hemisphere is in winter, why is this true?

Chemistry
1 answer:
Pachacha [2.7K]3 years ago
4 0

Explanation:

Opposite hemispheres have opposite seasons, no matter the earth's rotation, because of the earth's tilt. The earth's tilt is responsible for all seasons.

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Limiting reagent is defined as the reagent which is present in less amount and it limits the formation of products.

Excess reagent is defined as the reagent which is present in large amount.

For the given chemical reaction:

2NO(g)+O_2(g)\rightarrow 2NO_2(g)

We are given:

Moles of NO = 0.857 mol

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By stoichiometry of the reaction:

If 2 moles of NO reacts with 1 mole of oxygen gas.

So, 0.857 moles of NO will react with = \frac{1}{2}\times 0.857=0.4285mol of O_2

As, the given amount of oxygen gas is more than the required amount. So, it is considered as an excess reagent.

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By Stoichiometry of the reaction:

If 2 moles of NO produces 2 moles of nitrogen dioxide gas.

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Hence, NO is the limiting reagent in the given reaction and 0.857 moles of NO_2 will be produced.

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