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horsena [70]
3 years ago
12

What is a control group and is it always needed in an experiment?

Chemistry
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer:

yes, it is always needed

Explanation:

a control group is what you choose to control in an expirement its the amount of somthing you don't change

Hope this helped

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Question 107 points)
____ [38]

Answer:

Evaporation from the hydrosphere provides the medium for cloud and rain formation in the atmosphere. The atmosphere brings back rainwater to the hydrosphere. The atmosphere provides the geosphere with heat and energy needed for rock breakdown and erosion. The geosphere, in turn, reflects the sun's energy back into the atmosphere.

Explanation:

4 0
3 years ago
Suggest a reason why gold is expensive, even though it is found native in rock.​
Delvig [45]
Because it’s rare to find, and has a Extraordinary color that most rocks don’t have. Please mark as brainliest
6 0
3 years ago
The real purpose of the Milgram study was to investigate 1. the effects of punishment. 2. memory and learning. 3. the effect of
miskamm [114]

Answer:

1. the effects of punishment.

Explanation:

Stanley Milgram (1933 - 1984) was a graduate American psychologist at Yale University who conducted the Little Worlds Experience (the source of the concept of the six degrees of separation) and the Milgram Experience on obedience to authority.

Milgram was interested in researching how far people would go in obeying an instruction if it involved harming another person.

The study aimed to observe how easily ordinary people could be influenced into committing atrocities.

5 0
3 years ago
After an experiment is complete and has been published, what process makes sure the results are reliable?
slavikrds [6]

Answer:

B. Peer review

Explanation:

Peer review ensures that the results of an experimental procedures are consistent are reliable and they meet their objective statement.

When peers which are professionals in a field of study subjects the results from an experiment into a test, they can give their own verdict as to wether such findings are consistent and reliable with the problem in view.

7 0
3 years ago
A student is studying a sample of neon in a container with a moveable piston (this means the container can change in size). If t
Maurinko [17]

The new pressure of the gas would be 505.58 torr

<h3>Boyle's law</h3>

According to Boyle's law, the pressure of a gas is inversely proportional to its volume, provided that the temperature is constant.

This can be mathematically represented as: P1V1 = P2V2

In this case, P1 = 759.4 torr, P2 is what we are looking for, V1 = 97.6 mL, and V2 = 146.6 mL

Hence, P2 = P1V1/V2 = 759.4x97.6/146.6 = 505.58 torr

More on Boyle's law can be found here: brainly.com/question/1437490

#SPJ1

8 0
2 years ago
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