Chemistry: What is the pressure in millimeters of mercury of 0.0130 molmol of helium gas with a volume of 210. mLmL at 55 ∘C∘C? (Hint: You must convert each quantity into the correct units (LL, atmatm, molmol, and KK) before substituting into the ideal gas law.)

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What is the pressure in millimeters of mercury

Ответ:

alyssa337

21.01.2022

Chemistry

Answer : The pressure of the helium gas is, 1269.2 mmHg

Explanation :

To calculate the pressure of the gas we are using ideal gas equation:

PV=nRT

where,

P = Pressure of gas = ?

V = Volume of gas = 210. mL = 0.210 L (1 L = 1000 mL)

n = number of moles = 0.0130 mole

R = Gas constant = 0.0821L.atm/mol.K

T = Temperature of gas = 55^oC=273+55=328K

Putting values in above equation, we get:

$P\times 0.210L=0.0130mole\times (0.0821L.atm/mol.K)\times 328K$

P=1.67atm=1269.2mmHg

Conversion used : (1 atm = 760 mmHg)

Thus, the pressure of the helium gas is, 1269.2 mmHg

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What is the pressure in millimeters of mercury of 0.0130 molmol of helium gas with a volume of 210. mLmL at 55 ∘C∘C? (Hint: You must convert each quantity into the correct units (LL, atmatm, molmol, and KK) before substituting into the ideal gas law.)

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