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Anton [14]
2 years ago
7

Help pleaseeee pleaseee

Chemistry
1 answer:
sineoko [7]2 years ago
7 0

Answer:

smaeeeeeeeeeeee

Explanation:

sameeeee

h

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(100 POINTS) WILL MARK BRAINLIEST
frosja888 [35]

Answer:

the first option is the correct answer

7 0
2 years ago
A sample of helium gas has a pressure of 1.5 atm at 23 C. At what Celsius
Nina [5.8K]

Answer:

180.87 °C

Explanation:

Applying pressure law,

P/T = P'/T'..................... Equation 1

Where P = Initial pressure of helium gas, T = Initial Temperature of helium gas, P' = Final Pressure of helium gas, T' = Final Temperature of helium gas

Make T' the subject of equation 1

T' = P'T/P......................... Equation 2

From the question,

Given: P = 1.5 atm, P' = 2.3 atm, T = 23°C = (23+273)K = 296 K

Substitute these values into equation 2

T' = (2.3×296/1.5)

T' = 680.8/1.5

T' = 453.87 K

T' = 453.87-273

T' = 180.87°C

3 0
3 years ago
Are pennies polar or non-polar?
dedylja [7]

Answer:

I think non-polar although not 100% sure

hope this helps X3

4 0
3 years ago
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With very few exceptions, a substance follows a specific phase change pattern which is ____.
mash [69]

Answer:

D.) solid, liquid, gas

Explanation:

Think about the water cycle or the heating of water, it usually flows one way

You have ice, it melts to water, then if you boil that water it will turn into a gas

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3 years ago
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The molar masses of three gases, A, B, and C, are 4 grams, 16 grams, and 32 grams respectively. Which sentence represents the ef
timurjin [86]
This is where something called Graham's Law applies. Grahams law says that the rate of effusion is inversely proportional to the square root of the molar mass of a gas. What that means is that the less the molar mass of a gas is, the less quickly the gas effuses (effusion being the rate at which a gas can travel through a small hole). A great way to think about this is that effusion is thought about as though the gas is traveling through a small hole, so smaller particles would be able to go through it with greater ease than would a large particle. I don't know what particular sentences the question asks for are, but the answer should be that gas A (molar mass 4) has the greatest effusion rate, gas B (molar mass 16) has the second fastest effusion rate, and gas C (molar mass 32) has the slowest effusion rate.
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4 years ago
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