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Elenna [48]
3 years ago
11

A scientist plants two rows of corn for experimentation. She puts fertilizer on row 1 but does not put fertilizer on row 2. Both

rows receive the same amount of sun and water. She checks the growth of the corn over the course of five months. What is acting as the control group in this experiment?
Select one:
a.
The corn without the fertilizer.
b.
The corn with the fertilizer.
c.
The amount of water.
d.
The height of the corn plants.
Advanced Placement (AP)
1 answer:
krek1111 [17]3 years ago
4 0

Answer:

C

Explanation:

I hope it helps choose me the brainest

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In the above scenario of improvement, one needs to take one's manager's criticisms and work on it soo that in other jobs you wont be asking for the next step of action as you already know it.

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2 years ago
When the pressure that a gas exerts on a sealed container changes from 53.0 Bar to 35.2 Bar, the temperature changes from _____
viktelen [127]

Answer:

156.1^{\circ}C

Explanation:

We can solve the problem by using Gay-Lussac's law, which states that:

"For a fixed mass of ideal gas kept at constant volume, the pressure of the gas is directly proportional to its absolute temperature"

Mathematically:

\frac{p}{T}=const.

where

p is the pressure

T is the absolute temperature

The equation can be also rewritten as

\frac{p_1}{T_1}=\frac{p_2}{T_2}

where, in this problem:

p_1 = 53.0 Bar is the initial pressure

p_2=35.2 Bar is the final pressure

T_2=12.0^{\circ}+273=285 K is the final temperature

Solving for T1, we find the initial temperature:

T_1=\frac{p_1 T_2}{p_2}=\frac{(53.0)(285)}{35.2}=429.1 K

Converted into Celsius degrees,

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