Question 16 0 cut of 3 points temperature and pree ure at ST ure and preeeure at

Question

Question 16 0 cut of 3 points temperature and pree ure at ST ure and preeeure at ST standard 1 perature and preesure: 1 atm and 0 The 8ample is then aie te peratu22 C which s tre about e gas at is new temperature? 16) A 401 mL 8ample o gas 8 collected at standar R-8.206 x102 L atm mor K1 K = 273.15 + to roo Selected Answer: There are 0.0179 moles of O2 If the container wae not saaled properly leee gas would be in the container than expected It has a pressure of 1.08 atm. The amount of ga8 did not change. There ane 0.0179 moles af 02- all of these statements are true Anewers

Explanation / Answer

Sample is same

SO, number of moles finally will be same as initial number of moles

Lets calculate the initial number of moles

we have:

P = 1.0 atm

V = 401 mL

= (401/1000) L

= 0.401 L

T = 273 K

find number of moles using:

P * V = n*R*T

1 atm * 0.401 L = n * 0.08206 atm.L/mol.K * 273 K

n = 0.0179 mol

This will also be final mol of gas

Answer: 0.0179 mols of O2

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