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andreyandreev [35.5K]
3 years ago
13

Question 13 of 25

Chemistry
1 answer:
avanturin [10]3 years ago
7 0

Answer: is A

Explanation:

how becuase i just take the test

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It rate of effusion of a particular gas was measured and found to be 24.0 ml/min. under identical conditions the rate of effusio
hram777 [196]

The molar mass of unknown gas is 63.5 g/mol

calculation

let the unknown gas be represent by letter Y  

The rate of effusion of a gas varies inversely with square root of molar mass

that is R(CH4)/ R(Y)= √[(M(Y)/M(CH4)]

= 47.8 ml/min/24.0ml/min= √[(Y/16g/mol)]

square both side to remove square root sign

=47.8²ml/min /24²ml/min= Y/16 g/mol

=2284.84ml/min/576ml/min=Y/16g/mol

multiply both side by 16

y =63.5 g/mol


3 0
3 years ago
What most likely happens when water vapor cools?
murzikaleks [220]

Answer:

hello :)

Explanation:

Water vapor in the air reaches its dew point as it cools in the air around the can, forming <em>liquid</em> <em>drops</em> <em>of</em> <em>water</em>. Condensation is the process where water vapor becomes liquid.

5 0
2 years ago
I need help ASAP pls
Sergio039 [100]

Answer:

1.40.078 u

2.26.981539 u

3.207.2 u

4.56

5.53.9396147 u

6.1.00784 u

Explanation: your welcome

4 0
2 years ago
PLEASE HELP QUICK
ludmilkaskok [199]

Answer:

Okay, I think I may actually have an answer for you. I would go with C, "The number of particles able to undergo a chemical reaction is less than the number that is not able to."

Explanation:

I just took a quiz with a similar question, and B is the only gas particle that is able to react. This cancels out all the other answers, as A and B are obviously incorrect based on that information, and it rules out D because T1 is the only sample with a particle able to react. I hope this helps!

8 0
3 years ago
What conditions would produce the highest pressure?​
anzhelika [568]

air that is cooling will cause the highest pressure

Explanation:

This is because heat has to escape a certain area and if the heat can't escape then more and more pressure will build up in a area.

3 0
3 years ago
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