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Paraphin [41]
2 years ago
8

I don’t understand this question and need help!!

Chemistry
1 answer:
Dafna1 [17]2 years ago
6 0
Medium about 3 second? Not sure lol just need more points honestly lol
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The temperature at which the reaction is occurring is increased
svetlana [45]

The addition of heat energy to a system always causes the temperature of that system to increase. This is always true because you are adding heat of a substance to increase  its temperature. For example, you are going to drink a cup of coffee. And you wanted it hot to boost your attention. So you have to use hot water. In order for your water to become hot or warm, you need boil it in a kettle. Note that you are going to use an electric stove. The electric stove gets it energy from the source giving it a hotter temperature to the water in the kettle. You are applying heat energy to warm the water. So, the statement is true.

6 0
2 years ago
A sample of helium gas occupies a volume of 152.0 mL at a pressure of 717.0 mm Hg and a temperature of 315.0 K. What will the vo
kozerog [31]

Answer:

0.581 L  or  581 mL

Explanation:

As stated in the question, the combined gas law is (P1*V1/T1) = (P2*V2/T2)

Write down the amounts you are given.

V1 = 0.152 L (I was taught to always convert milliliters to liters)

P1 = 717 mmHg

T1 = 315 K

V2 = ?

P2 = 463 mmHg

T2 = 777 K

The variable that is being solved for is final volume. Fill in the combined gas law equation with the corresponding amounts and solve for V2.

(717 mmHg*0.152 L) / (315 K) = (463 mmHg*V2) / (777 K)

0.346 = (463*V2) / (777)

0.346*777 = (463*V2) / (777)*777

268.842 = 463*V2

268.842/463 = (463*V2)/463

V2 = 0.581

Pressure and volume are indirectly proportional. This checks out because the volume increased while pressure decreased. Volume and temperature are directly proportional. This checks out because both volume and temperature increased. This is a good way to check your answers. You can also solve each side of the combined gas law equation to see if they are both the same.

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3 years ago
Describe two variables that affect the rate of diffusion
Katyanochek1 [597]

Answer:

The two variables affecting the rate of diffusion are the concentration gradient and size of the molecule. Concentration gradient: The movement of the substance is generally along the concentration gradient of the solute and it moves from a region of its higher concentration to a region of its lower concentration.

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Most animals begin their lives as a single, microscopic cell called a zygote. This begins a series of countless cell divisions,
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C. Mitosis

Mitosis is a process where a single cell divides into two identical daughter cells.

The purpose of which is for growth and to replace worn out cells.
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3 years ago
True or False: Quantitative data is about a description or observation and qualitative data is about measurements and numbers. P
kati45 [8]
False, quantitative is numerical date, qualitative is about descriptive or observation data.
4 0
2 years ago
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