1. Exercise 11.79 A gas mixture contains 74% nitrogen and 26% oxygen. If the total pressure is...

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Chemistry

1. Exercise 11.79
A gas mixture contains 74% nitrogen and 26% oxygen.
If the total pressure is 1.18 atm what are the partial pressuresof each component?
Express your answers using two significant figures. Enter youranswers numerically separated by a comma.
2. Chapter 11 Question 11 - Algorithmic
What is the molecular weight of a gas if a 21.0 g sample has apressure of 836 mm Hg at 25.0Â°C in a 2.00 L flask? (R= 0.0821 Latm/ mol K)
What is the molecular weight of a gas if a 21.0 g sample has apressure of 836 mm Hg at 25.0Â°C in a 2.00 L flask? (R= 0.0821 Latm/ mol K)
243 amu
234 amu
1.89 amu
11.1 amu
none of the above
3. Exercise 11.91
CH3OH can be synthesized by the reaction:
CO(g)+2H2(g)â†’CH3OH(g)
Part A
How many liters of H2 gas, measured at 748 mmHg and 83 âˆ˜C, arerequired to synthesize 0.53 molof CH3OH?
VH2 = ??????
Â Â L
Part B
How many liters of CO gas, measured under the same conditions,are required?
Express your answer using two significant figures.
VCO = ????? Â Â LÂ Â
4. Exercise 11.97
How many grams of calcium are consumed when 160.4 mL of oxygengas, measured at STP, reacts with calcium according to thefollowing reaction?
2Ca(s)+O2(g)â†’2CaO(s)
mCa = Â Â gÂ Â

Answer & Explanation Solved by verified expert

4.5 Ratings (718 Votes)

1 Given Total Pressure118 atm 74 N2074 26 O2026 From Daltons law Partial pressure PgasXPtotal PN2 07411808732 PO2 02611803068 2 From Ideal gas PVnRT Given Weight21g P836mmof See Answer

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