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3 years ago

PLEASEEEE HELP WILL MARK BRAINLIEST!!!

Chemistry

2 answers:

nevsk [136]3 years ago

7 0

Answer:

C. One mole of water was produced from this reaction.

Explanation:

From the balanced equation:

2H₂ + O₂ → 2H₂O,

It is clear that 2 mol of H₂ react with 1 mol of O₂ to produce 2 mol of H₂O.

So, if one mole of hydrogen was used in this reaction:

1/2 mol of O₂ was used in the reaction, and

1 mol of water was produced from this reaction.

So, the correct statement is:

C. One mole of water was produced from this reaction.

Simora [160]3 years ago

4 0

Answer:

The correct answer is option C.

Explanation:

$2H_2+O_2\rightarrow 2H_2O$

If 1 mole of hydrogen is used. For that divide the whole equation with '2'.

$\frac{2}{2}H_2+\frac{1}{2}O_2\rightarrow \frac{2}{2}H_2O$

$H_2+\frac{1}{2}O_2\rightarrow H_2O$

When 1 mole of hydrogen reacts with half mole of oxygen it gives 1 mol of water.

So, from the given options the correct answer is option C.

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if a 1.85g mass of zinc produces 475 mL og gas and your balloon weighs 0.574 g and the room temperature is 20.5°C. calculate the

aleksley [76]

You will use an ideal gas equation here. Let us denote 'x' as the unknown sample of zinc if another 1 ml of it is added to make a total of 476mL gas. The ideal gas equation is PV = nRT. Assume atmospheric conditions and then substitute everything to the equation.

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3 years ago

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Answer:

If you were speaking of the term mole as a skin condition then a teacher might compare it to a beauty spot. In the position your were speaking of it as an animal they might compare it to mouse a rat or a hamster. In the case you were speaking of a mole as a secret agent then a teacher might compare them to a double agent.

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3 years ago

Potassium and fluorine are both halogens?

andreev551 [17]

Answer:

false, Potassium and fluorine are not halogens.

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3 years ago

Jabir is a Muslim counselee. His counselor is unaware of many aspects of Muslim life, beliefs, etc. Teaching his counselor about

Evgen [1.6K]

Answer: Frustrated (Option C)

Explanation:

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However, since the counselor doesn't have a concrete idea or knowledge about Jabir’s religion, which might be the integral part of his life having problem. He will only get frustrated telling him about his religious lifestyle. In other to provide information to his counselor, so as the counselor will help him in deducing the possible solution(s).

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3 years ago

A gas at constant pressure occupies 0.400 L at 50.0°C. What volume will it have at 300.°C? If you could show work that would rea

DaniilM [7]

This can be solved using the Combined Gas Law. The formula for that is

$\frac{P_{1} V_{1} }{T_{1} } = \frac{P_{2} V_{2} }{T_{2} }$

Let's go ahead and fill in our known values. Since pressure remains the same, it doesn't matter what number we use, so let's assume 1 atm on both sides. For temperature, remember to convert it to Kelvin first (K = C + 273).

$\frac{(1 atm) (0.400 L)}{(323 K)} = \frac{(1 atm) (x L)}{(573 K)}$

Go ahead and simplify both sides.

0.001238 = $\frac{(x L)}{(573 K)}$

Multiply both sides by 573.

0.7095 = x L

So, at 300° C, your gas will occupy 0.7095 L.

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3 years ago