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docker41 [41]
2 years ago
13

SOMEONE help! due today 25 POINTS SEE ATTACHED.

Chemistry
1 answer:
Llana [10]2 years ago
5 0

Answer:

Q4. 2H₂ + O₂ ⟶ 2H₂O; 5; 2

Q5. 24; 30; H₂; 0; 5

Explanation:

Q4.

The equation for the reaction is

2H₂ + O₂ ⟶ 2H₂O

One O₂ molecule reacts with 2H₂ molecules.

\text{No. of O$_{2}$ molecules} = \text{10 H$_{2}$ molecules } \times \dfrac{\text{1 O$_{2}$ molecule }}{\text{2 H$_{2}$ molecules}} = \textbf{5 O$_{\textbf{2}}$ molecules}\\\\\text{Ten hydrogen molecules react with $\textbf{five}$ oxygen molecules.}

We started with seven oxygen molecules. Five of them reacted, so

Two O₂ molecules did not react.

Q5.

Two water molecules form from two hydrogen molecules.

\text{No. of H$_{2}$O molecules} = \text{24 H$_{2}$ molecules } \times \dfrac{\text{2 H$_{2}$O molecules}}{\text{2 H$_{2}$ molecules}} = \textbf{24 H$_{\textbf{2}}$O molecules}Two water molecules form from one oxygen molecule

\text{No. of H$_{2}$O molecules} = \text{15 O$_{2}$ molecules } \times \dfrac{\text{2 H$_{2}$O molecules}}{\text{1 O$_{2}$ molecules}} = \textbf{30 H$_{\textbf{2}}$O molecules}Hydrogen forms fewer water molecules of water, so

Hydrogen is the limiting reactant.

The 24 hydrogen molecules will be completely used up.

The number of hydrogen molecules remaining at the end of the reaction is zero.

They have reacted with 12 O₂ molecules.

The number of O₂ molecules remaining is 17 - 12 = 5

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1 year ago
What example of mixture could be seperated using two or more techniques? Explain your answer
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2 years ago
Which were Lenin's actions before and during the Russian Revolution? Check all that apply.
Stolb23 [73]

Answer:

He supported the ideology of Marxism.

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7 0
3 years ago
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6 0
3 years ago
The coefficient of performance (cop) of a refrigerator is defined as the ratio of?
Vinvika [58]

The coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

The usable heating or cooling delivered to work required ratio, also known as the coefficient of performance, or COP, of a heat pump, refrigerator, as well as air conditioning system. Higher efficiency, less energy (power) usage, and thus reduced operational costs are all related to higher COPs.

Coefficient of performance formula:

K = Q_{H} / W_{in}

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It is refrigeration's coefficient of performance (COP) will always be greater than 1.

Therefore, the coefficient of performance (cop) of a refrigerator is defined as the ratio of " the work necessary to heat or cool something usefully."

To know more about  coefficient of performance

brainly.com/question/14058512

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3 0
2 years ago
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