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3 years ago

How many moles of helium are needed to fill a balloon to a volume of 5.3 L at 22 ℃ and 632 mmHg?

Chemistry

1 answer:

son4ous [18]3 years ago

6 0

Answer:

0.18 moles

Explanation:

Applying,

PV = nRT................... Equation 1

Where P = pressure, V = volume, n = number of moles, R = molar gas constant, T = temperature.

make n the subject of the equation

n = PV/RT............... Equation 2

Given: V = 5.3 L, T = 22 °C = (22+272) K = 295 K, P = 632 mmHg = (0.00131579×632) = 0.8316 atm, R = 0.083 L.atm/K.mol

Substitute these values into equation 2

n = (0.8316×5.3)/(0.083×295)

n = 0.18 moles

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lara31 [8.8K]

Answer: C= 0.406 M

Explanation:

Solution.

0.730

;

ν=0.730mol;

1.8

⋅

1.8

;

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3 mL=1.8L;

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1.8 L=0.406 M

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amm1812

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3 years ago

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kkurt [141]

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