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Inga [223]
3 years ago
8

Why do scientists need control groups?

SAT
1 answer:
lubasha [3.4K]3 years ago
3 0

Explanation:

A scientific control group is an essential part of many research designs, allowing researchers to minimize the effect of all variables except the independent variable. The control group, receiving no intervention, is used as a baseline to compare groups and assess the effect of that intervention.

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How are these excerpts similar? Both offer complaints. Both recall history. Both state demands. Both admit defeat.
kolbaska11 [484]

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Explanation:

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Carbon dioxide can be produced form what type of power generation?
Leokris [45]

fossil fuel i believe

5 0
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I need 60g of fruit and 100ml of juice to make a smoothie. I follow the same recipe to make a large one. A large one uses 350g o
Gemiola [76]

Answer:

583.3333 ml

Explanation:

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3 years ago
Four ways in which you can address the identified socio economic factors.
iVinArrow [24]

Answer:

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3 0
2 years ago
The dnsity of aluminum is 2. 70 g/mL. if the mass of a piece of aluminum is 244 grams, what is the volume of the aluminum
joja [24]
27.0 g

Explanation:
The density of a substance tells you the mass of exactly one unit of volume of said substance.
In your case, aluminium is said to have a density of
density Al
=
2.70 g
.
cm
−
3
This tells you that every
1 mL
of aluminium has a mass of
2.70 g
.
All you have to do now is use the density of aluminium as a conversion factor to go from cubic centimenters of aluminium to grams
10.0
cm
3
⋅
2.70 g
1
cm
3
=
27.0 g
−−−−−
The answer is rounded to three sig figs.
8 0
3 years ago
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