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igor_vitrenko [27]
2 years ago
6

What size container is needed to hold 7.00 mol of a gas at 342 K and 255 kPa? *

Chemistry
1 answer:
ValentinkaMS [17]2 years ago
3 0
PV = nRT

I only know the valeu of R is you're using atm, so convert kPa to atm.

1 atm = 101.325 kPa

2.52 atm = 255 kPa

2.52atm(x) = 7(.0821)(342)

2.52atm(x) = 196.5

x = 78

78 liters

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5 0
1 year ago
250. grams of ethane are allowed to react with 220. grams of oxygen gas. Which of these
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1) Ethane is the limiting reactant

2) mass of CO₂ produced is 733.33 g

Explanation:

C₂H₆ + 2O₂ → 2CO₂ + 3H₂ ------------------------(1)

molar ratio for equation (1) can be shown as;

1 : 2 → 2 : 3

molecular weight of moles of C₂H₆ = 30 g/mol

molecular weight of moles of O₂ = 32 g/mol

molecular weight of moles of CO₂ = 44 g/mol

mass of O₂ = 220 g

mass of C₂H₆ = 250 g

number of moles of O₂ = mass ÷ molecular weight = 220 g ÷ 32 g/mol * 2 = 13.75 moles

number of moles of C₂H₆ = mass ÷ molecular weight = 250 g ÷ 30 g/mol = 8.333 moles

1) Ethane is the limiting reactant as the 8.333 moles will finish before the 13.75 moles of the oxygen is totally consumed.

2) 1 mole of C₂H₆ will form 2 moles of CO₂

Therefore, 8.333 moles will form 16.667 moles of CO₂

mass of CO₂ formed = number of moles * molecular weight = 16.667 * 44 = 733.33 g

7 0
2 years ago
Read 2 more answers
At 125 C the pressure of a sample of oxygen (O2) is 2.25 atm. What will the
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Answer:

1.68 atm

Explanation:

Applying

P/T = P'/T'................... Equation 1

Where P = Initial pressure, T = Initial Temperature, P' = Final pressure, T' = Final Temperature.

Make P' The subject of the equation

P' = PT'/T.............. Equation 2

From the question,

Given: P = 2.25 atm, T = 125°C = (125+273) K = 398 K, T' = 25°C = (25+273) K = 298 K.

Substitute these values into equation 2

P' = (2.25×298)/398

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3 0
3 years ago
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