Chemistry, 19.07.2019 20:30 clairajogriggsk

At what temperature celsius will 19.4g of molecular oxygen, o2, exert a pressure of 1820mm hg in a 5.12th cylinder?

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Answers

T = -28.2 °C

Solution:

Data Given;
P = 1820 mmHg = 2.39 atm

V = 5.12 L

m = 19.4 g

R = 0.0821 atm.L.mol⁻¹.K⁻¹

Calculating moles,

n = 19.4 g ÷ 32 g.mol⁻¹

n = 0.606 mol

Assuming that the oxygen gas is acting perfectly, then according to Ideal Gas Equation,
P V = n R T

Solving for T,
T = P V / n R

Putting values,

T = (2.39 atm × 5.12 L) ÷ (0.606 mol × 0.0821 atm.L.mol⁻¹.K⁻¹)

T = 244.7 K
Or,
T = -28.2 °C

Answer from: Quest

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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At what temperature celsius will 19.4g of molecular oxygen, o2, exert a pressure of 1820mm hg in a 5...

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