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Andrei [34K]
3 years ago
5

Please help in Chemistry!!!! 15 points! I added a picture below...

Chemistry
2 answers:
aleksandr82 [10.1K]3 years ago
7 0
Yeah, the answer would be choice B because it drops from 40 to 20 so it's -20
krek1111 [17]3 years ago
5 0
The answer would be choice B because the energy decreased by 20 J
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Question: convert 22.63 miles of oxygen to volume<br><br> very urgent
Stels [109]

Answer:

506.912 L

Explanation:

From the question given above, the following data were obtained:

Number of mole of O₂ = 22.63 moles

Volume of O₂ =?

Recall:

1 mole of a gas occupy 22.4 L at STP.

With the above information, we obtained the volume occupied by 22.63 moles of O₂ as follow:

1 mole of O₂ occupied 22.4 L at STP.

Therefore, 22.63 moles of O₂ will occupy = 22.63 × 22.4 = 506.912 L at STP.

Thus, 22.63 moles of O₂ is equivalent to 506.912 L.

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2 years ago
More bushes of potatoes will be produced if the soil is fertilized more WHAT IS THE INDEPENDENT VAIRABLE AND THE DEPENDENT VARIA
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Answer:

The dependent variable is the bushes of potatoes while the soil is an independent variable.

Explanation:

An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).

This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.

Cause and effect can be defined as the relationship between two things or events in which an occurrence one (cause) leads to the occurrence of another (effect).

In an experiment , the variable being manipulated by an experimenter is known as an independent variable while the dependent variable is the event expected to change when the independent variable is manipulated.

Hence, the dependent variable is the bushes of potatoes while the soil is an independent variable.

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Answer:

C

Explanation:

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A chemistry graduate student is studying the rate of this reaction:
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Answer:

Explanation:

Attached below is the solution

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How did ernest rutherford's discovery affect the model of the atom?
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Ernest Rutherford discovered the nucleus. This enabled other scientists to create a model in which electrons fly around the nucleus similarly to how the solar system works.
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3 years ago
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