ons/17136V/suonsənb/əxeı/61771.This is the data sheet for Molar mass of vapor;1. Unknown Liquid #:N/A2. Mass of flask+ cap + rubber band56.45 gse3. Temperature of boiling water 97°C३4. Barometric Pressure 755.7mmHg5. Mass of flask + rubber band + cap + condensed vapor_57.886. Mass of condensed vapor7. Volume of flask 243.8mL8. Molar Mass of Vaporg/molWhat is the molar mass of vapor?O 179200O 1.790179.2Nbeatsqudio

The division of mass/weight of known compound and that compound's moles defines the molar mass for…

Answered: ons/17136 V/suonsənb/əxeı/6 177 1. This…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 106QRT

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Air at 25 oC , 740 mm Hg and 55% Relative Humidity is compressed to 10 atm. To what temperature (oC) must the air-water mixture be cooled if 90 % of the water is to be condensed ?
If 0.80 g of the vapor of the unkknown liquid occupied 280ml at 100 degrees celcius and 750 mm Hg, calcuate the molecular weight of the liquid
Pressure was exerted with a piston on molten naphthalene at 95 °C. The vaporpressure of naphthalene when the applied pressure is 1.0 bar is 2.0 kPa. What is thevapor pressure when the pressure on the liquid is 15 MPa? The mass density ofnaphthalene at this temperature is 1.16 g cm-1.
A container filled with an unknown quantity of the gaseous mixture at 310 K is in hydrostatic equilibrium. At 5 m above the bottom, the pressure is 0.980 bar. At the bottom, the pressure is 1.001 bar. What is the molecular weight of the gaseous mixture?
Q1a-> A sample of hydrogen (H₂) gas was collected over water at 60°C. If the total volume of gas collected was 53.9 mL and the atmospheric pressure was 1.14 bar, what mass (in g) of hydrogen gas was collected above the water? The vapour pressure of water at 60°C is 150 torr. Q1b=> What is the molar mass (in g mol-¹) of a gas which has a density of 1.91 g/L at a pressure of 0.91 bar and temperature 15.3°C? Your answer may not correspond to an actual gas. Do not try to identify the gas.
1. What is the apparent hard-sphere diameter of CO2 at 0°C? The viscosity of CO2(g) at 1 atm and 0°C is 139 μP (micropoise). 2. When equal amounts of hydrogen, H2, and iodine, I2, are mixed together at a total pressure of 1 bar, the partial pressure of hydrogen iodide, HI, vapour produced from by the reaction H2(g) + I2(g) ⇌ 2 HI(g) is 22.8 kPa. Calculate the equilibrium constant for the reaction. 3. The equilibrium constant for the reaction 2HCl(g) + O2(g) ⇌ H2O(g) + Cl2(g) is 13300 at 400 K and 429 at 500 K. Use the van't Hoff equation to determine the standard enthalpy of reaction.
The Molecular Weight of an unknown liquid is determined using the Dumas Method. The following data has been obtained: Atmospheric Pressure = 754.6 TorrVolume of the Flask = 213 mLTemp. of Water Bath = 100 °CMass of Re-Condensed Liquid = 0.582 g What is the Molecular Weight of the liquid?
A student collected 10.28 mL of H2 over water at 30.00 ºC. The water level inside the collection apparatus was 9.8 cm higher than the water level outside. The barometric pressure was 735 torr. How many grams of zinc had to react with HCl(aq) to produce the H2 that was collected? You may need the data in the table to solve this problem. Temperature (0C) Vapor Pressure 30 31.824 Enter your answer in accordance to the question statementmass =____ g Zn
A parcel of unsaturated air contains a mixture of dry air and water vapor. The specific humidity q of the air parcel is 12 g kg^−1. Recall that q = Mv / (Mv+Md),where Mv is the mass of the water vapor and Md is the mass of the dry air. This is equivalent to what we have been calling the fractional concentration of water vapor by mass. (a) If the air parcel is at a temperature T= 25◦C , what is the virtual temperature of the air parcel? (b) If the air parcel is at a temperature T= 25◦C and a pressure of 1000 hPa, what is the relative humidity of the air parcel? (c) What is the apparent molar mass of the air parcel?
What is the change in the boiling point of water at 1000 C per Pa change under atmospheric pressure conditions? The molar enthalpy of vaporization is 40.69 kJ mol-1, the molar volume of liquid water is 0.019 x 10-3 m3 mol-1, and the molar volume of steam is 30.199 x 10-3m3 mol-1, all at 100.000 C and 1.01325 bar. (Hint: change in temperature per change in pressure, dT/dP).
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Nitrogen content of an organic compound can be determined by the Dumas Method. The compound is passed over hot copper (II) oxide and reacts as follows: Compound N 2 + CO 2 + H 20The product gases are passed through a solution of potassium hydroxide to remove CO2. The remaining gas is N2 saturated with H20 vapour. In a given experiment 0.225g of the unknown compound produces 27.8mL of N2 saturated with H2O vapor at 25oC and 730Torr. What mass is the % of nitrogen in the compound? (NB: vapour pressure of H2O at this temperature is 23.8Torr.)

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