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dedylja [7]
3 years ago
8

True or false? To increase the concentration of a solution, add more solute.

Chemistry
1 answer:
givi [52]3 years ago
6 0

Answer:

Explanation:

Increasing the solute would increase the concentration. Increasing the solvent would decrease the concentration. For instance, if your lemonade was too tart, you would add more water to decrease the concentration. If your tea was too bitter, you could add more sugar to increase the sweetness. Changing the amounts of solute and solvent directly effect the concentration of the solution.

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If an electromagnetic wave has a frequency of 4.5 x 10^18 Hz, what is its wavelength? The speed of light is 3 x 108 m/s.
Mekhanik [1.2K]

Answer:

Wavelength, λ  = 6.7 x 10^-11 m

Explanation:

Frequency and wavelength are inversely proportional to each other.

In this problem;

f =  4.5 x 10^18 Hz

wavelength, λ = ?

Speed of light, c = 3 x 108 m/s.

These variables are related by the following equation;

c = λ * f

Making λ subject of focus, we have;

λ = c / f

λ = 3 x 10^8 / 4.5 x 10^18

λ  = 0.67 x 10^-10

λ  = 6.7 x 10^-11 m

3 0
3 years ago
A biology student wants to conduct a study of how the amount of food affects weight gain for mice. He sets up four cages with a
drek231 [11]

The independent variable would be the variable in the research that is being manipulated by the researcher. In this case, it would be amount of food as it is what is being manipulated and changed in the research design. The dependent variable would be the variable that is being studied so, for this case, it would be the weight gain of the mice. The constants are the factors that might affect the dependent variable but is held constant or the same by the researcher throughout the experiment. These are the size of cage, amount of water, amount of sunlight, temperature and the exercise wheel.

5 0
3 years ago
Determine the volume of fluid in the graduated cylinder 12.8ml 12.7ml 12.78ml 12.88
liubo4ka [24]

Answer:

the volume is 12.79ml

Explanation:

12.8+12.7+12.78+12.88=51.16

51.16/4

=12.79

8 0
3 years ago
What is the best way to<br> determine which brand of<br> paper towel is the<br> strongest when wet?
luda_lava [24]

Answer:Bounty

Explanation:After being soaked, the Bounty towel held an impressive 43 ounces or 2.69 pounds.

Did this help?

4 0
3 years ago
I know the paper is blurry but can anyone explain any of the questions from 76-80?
Whitepunk [10]

Answer:try to make a good pic please I have ideas about the topic

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3 years ago
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