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mamaluj [8]
3 years ago
7

1.00 L of a gas at STP is conpressed to 473 mL. what is the new pressure of the gas? STP = 0.0°C or 1.0 atm.

Chemistry
1 answer:
vovangra [49]3 years ago
5 0
473 mL= 0.473 L
P_{1}V_{1}=P_{2}V_{2}

1 atm*1.00L=P_{2}*0.473 L

P_{2}=  \frac{1 atm*1L}{0.473L} = 2.11 atm

P_{2}=2.11 atm
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Answer:

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Explanation:

We know that

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Given that concentration HClO4 is 5 M it means that it have 5 moles of HClO4 in 1000 ml.

We know that

Mass = density x volume

Mass of 1000 ml  solution = 1 x 1000 =1000     ( density = 1 gm/ml)

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1.

Percentage by weight = 502.3 /1000

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2.

We know that

molar mass of water = 18 g/mol

mass of water in 1000 ml = 1000 - 502.3 g=497.9 g

So moles of water = 497.7 /18 mole

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