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LiRa [457]
3 years ago
10

Help please .............​

Chemistry
1 answer:
lapo4ka [179]3 years ago
3 0

Answer:

And what is your question

Explanation:

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What is the temperature of 4.5 moles of a gas that occupies 50. mL at 1.35 atm?
devlian [24]

Answer:

T = 0.182 Kelvin

Explanation:

As we know that

PV = nRT\\

Where P is the pressure in atmospheric pressure

T is the temperature in Kelvin  

R is the gas constant  

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R = 0.08206

Substituting the given values in above equation, we get -

1.35 * \frac{50}{1000}= 4.5 * 0.08206* T\\

On rearranging, we get

T = \frac{1.35*50}{1000*0.08206*4.5} \\

T = 0.182 Kelvin

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3 years ago
20 mL of 80°C water is mixed with 20 mL of 0°C water in a perfect calorimeter. What is the final temperature?
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(mCΔT)1 = (mCΔT)2

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 (ΔT)1 = (ΔT)2
(T - 80) = (0 - T)
T = 40°C
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