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konstantin123 [22]
3 years ago
11

Eva is performing an experiment to determine which type of disinfectant kills the most bacteria. She has six plates of the same

kind and amount of bacteria. She adds one of five different kinds of disinfectant to each plate and leaves one plate without any disinfectant as a control.
What role does the independent variable play in this experiment
A.
The type of disinfectant determines the amount of bacteria killed.
B.
The amount of bacteria killed determines the type of bacteria used.
C.
The type of disinfectant used determines the type of bacteria used.
D.
The amount of bacteria killed determines the type of disinfectant used.
Chemistry
2 answers:
Soloha48 [4]3 years ago
6 0

A is the one so she could spot the differnece with natural and the unnatrual decline

Flura [38]3 years ago
5 0

Answer:

A

Explanation:

I did it just now

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Answer: The given statement is true.

Explanation:

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So, when we unnecessarily use water then it means we are wasting a natural resource that cannot be reproduced again by human beings.

Therefore, more we are able to conserve water more we can protect other human life's and environment also.

If there is shortage of water then its prices will go high and hence we need to pay more for it.

Thus, we can conclude that the statement conserving water can save money while protecting the environment, is true.

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What is the value for (delta)G at 1000 K if (delta)H = -220 kJ/mol and (delta)S = -0.05 kJ/(molK)?
tankabanditka [31]
The system is isothermal, so we use the formula:
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Plugging in the given values:
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(delta)G = -170 kJ/mol

If we take a basis of 1 mol, the answer is
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The name of an oxyacid has the suffix -ous acid. What is the suffix of the oxyanion?
Dima020 [189]

Answer:

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Explanation:

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What is the role of the kinetic theory of matter in the process of solutes being dissolved into solvents?
hjlf

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i'd say the second choice.

Explanation:

the rise in temperature causes the particles to vibrate causing motion. they collide thus resulting to the weakening of the particles.

hope it is of use to you.

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