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sweet-ann [11.9K]
3 years ago
12

True or False: The amount of water has and will always remain about the same?

Chemistry
2 answers:
kogti [31]3 years ago
8 0

Answer:

False the amount of water on earth has decreased over the years

Explanation:

ki77a [65]3 years ago
6 0

Answer:

In the world? I would say no, but at the same time there are a lot of variables to consider in this. But I'd say no. Just my opinion.

Explanation

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Methanol, CH3OH, has been considered as a possible fuel. Consider its oxidation: 2 CH3OH(l) + 3 O2(g) → 2 CO2(g) + 4 H2O(g) ΔG =
Inessa [10]

<u>Answer:</u> Maximum work that can be obtained by given amount of methanol is -343kJ.

<u>Explanation:</u>

For the given chemical reaction:

2CH_3OH(l)+3O_2(g)\rightarrow 2CO_2(g)+4H_2O(g);\Delta G_{rxn}=-1372kJ/mol

By Stoichiometry of the reaction:

2 moles of methanol does a work of 1372 kJ.

So, 0.5 moles of methanol will do a work of = \frac{1372kJ}{2}\times 0.5=343kJ

Hence, maximum work that can be obtained by given amount of methanol is -343kJ.

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3 years ago
For the reaction of ammonia (NH3) with oxygen (O2) to produce water and nitric oxide (NO), how many moles of water are produced
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Answer:

3.3 moles of H₂O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

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From the balanced equation above,

4 moles of NH₃ reacted to produce 6 moles of H₂O.

Finally, we shall determine the number of mole of H₂O produced by the reaction of 2.2 moles of NH₃. This can be obtained as follow :

From the balanced equation above,

4 moles of NH₃ reacted to produce 6 moles of H₂O.

Therefore, 2.2 moles of NH₃ will react to produce = (2.2 × 6)/4 = 3.3 moles of H₂O.

Thus, 3.3 moles of H₂O were obtained from the reaction.

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Explanation:

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The answer is letter d    
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3 years ago
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