1,.35 mol sample of O2 gas is at STT. What volume does the gas occupy A) 33.2 mo
ID: 1044152 • Letter: 1
Question
1,.35 mol sample of O2 gas is at STT. What volume does the gas occupy A) 33.2 mol B) 166 mol C) 30.2 mol D) 0.0422 mol E) 1.93 mol ? 8) A mixture of gases contains 2.57 mol of oxygen gas, 3.21 mol of nitrogen gas, and 2.89 mol of chlorine gas. The total pressure of the gasses is 5.00 the mixture? A) 1.95 atm C) 1.48 atm B) 8.67 atm D) 12.9 atm atm, oxygen has a partial pressure of 1.4 atm· of the mixture is water vapor. The total 9) In a mixture, hydrogen gas has partial pressure of 1.2 and nitrogen has a partial pressure of 0.80 atm. The rest 9) sure is 7.0 atm. What is the partial pressure due to water vapor? A) 5.2 atm C) 10.4 atm B) 70 atm D) 3.6 atm 10) A 0.465 g sample of an unknown compound occupies 245 ml. at 298 K and 1.22 atm. What is the 10) molar mass of the unknown compound? A) 26.3 g/mol B) 81.8 g/mol C) 38.0 g/mol D) 12.2 g/mol E) 33.9 g/mol 11) Determine the volume of H2S (at 375 K and 1,.20 atm) needed to produce 55.0 g of S. Assume that 11) there is excess SO2 present. 2 H2S(g)+SO2e) -36)+2H20G) A) 22.7L B) 34.1 L C) 44.0L D) 66.0 L E) 29.3 L 12) Which statement best explains the meaning of the phrase "like dissolves like"? A) A solvent will easily dissolve a solute of similar molar mass. B) A solvent and solute with similar elemental composition will readily form a solution. C) The only true solutions are formed when water dissolves non-polar solutes. D) A solvent and solute with similar intermolecular forces will readily form a solution. E) None of these statements is correct.Explanation / Answer
Answer(7) 1 mole of gas at STP occupies =22.4 L
1.35 mole wil occupy= 1.35*22.4=30.24 L = 30.2 L
units of the options are wrong it must be in L Answer is 30.2 L
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