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Nadya [2.5K]
2 years ago
6

50 POINTS for a legitimate response. Please answer the question, chose the correct unit conversions on the right. Please read th

rough the ENTIRE thing. Answer ASAP, please.

Chemistry
1 answer:
makkiz [27]2 years ago
5 0

Answer:

0.121 millimeters

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How many moles of H2 are in a flask with a volume of 2500 mL at a pressure of 30.0 kPa and a temperature of 27oC?
quester [9]

Answer:

0.0300 moles of H₂

Explanation:

The original equation is PV = nRT. We need to change this to show moles (n).

n = \frac{PV}{RT}

It's important to convert your values to match the constant (r) in terms of units.

30.0 kPa = 0.296 atm

2500 mL = 2.50 L

27 °C = 300 K

Now, plug those values in to solve:

n = \frac{(0.296)(2.50)}{(0.0821)(300)}    -  for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)

Finally, you are left with n = 0.0300 moles of H₂

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3 years ago
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