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Rudik [331]
3 years ago
12

The volume of a gas is increased from 0.5 L to 4.0 L while the temperature is held constant. The pressure of the gas will go fro

m 24 atm to ?
Chemistry
1 answer:
AVprozaik [17]3 years ago
6 0
From Boyle's law the volume of a fixed mass of a gas is inversely proportional to the pressure at a constant absolute temperature. Thus; K = PV                          Hence; P1V1 =P2V2                                                                                                      0.5 × 24 = 4× P2                                                                                                      P2 = 12/4 = 3 atm                                                                                      Therefore; the pressure will go from 24 atm to 3 atm
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6 0
3 years ago
Convert 4.5 X 1022 molecules of H2O to moles.
noname [10]

Answer:

<h3>The answer is 0.075 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

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From the question we have

n =  \frac{4.5 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.074750830...

We have the final answer as

<h3>0.075 moles</h3>

Hope this helps you

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