Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A high pressure container of methane gas which exhibits an absolute pressure of 200 atms at a temperature of O C. A large fire causes the temperature of the cylinder to rise to 1500 C.
The vapour pressure of pyridine is 50.0 kPa at 365.7 K and the normal boiling point is 388.4 K. What is the enthalpy of vaporization of pyridine?
The change in Gibbs energy that accompanies the oxidation of C6H12O6 (s) to carbon dioxide and water vapor at 250 C is -2828 KJ mol-1. How much glucose does a person of mass 65 kg need to consume t
Why is it that Van der Waals can be used to describe the behavior of a real gas? What is the rationale for the equation used and how are the parameters determined?
A pure rock sample believed to be pure calcium carbonate is subjected to chemical analysis and found to contain 51.3% Calcium, 7.7% Carbon and 41.0% Oxygen by mass. Why can't this rock sample be pu
When 1.535 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter, the water temperature rose from 20.27oC to 26.87oC.
A Sunscreen preparation contains 2.50% by mass benzyl salicylate. If a tube contains 4.0 ounces of sunscreen, how many kilograms of benzyl salicylate are needed to manufacture 325 tubes of sunscree
Gaseous dinitrogen pentaoxide decomposes into oxygen and nitrogen dioxide. If we start with a partial pressure of 200 torr of the N2O5, it's equilibrium pressure is 100 torr. What is the equilibriu
H(fusion)=842.2 cal/mol at mp 84.45K; H(vaporization)=4487 cal/mol at bp 231.04K; S=9.95 eu for heating solid propane from 0K to 85.45K; S=21.06 eu for heating liquid propane from 85.45K to 231.04K.
Chlorine gas will react with nitrogen gas to yield NCl(g). At 500 K, I mix 1.00 g of chlorine and 1.00 g of nitrogen in a 2 L flash and allow them to react until equilibrium is reached.
A large evacuated tank whose volume is 10,000ft3 is to be filled with carbon dioxide gas at atmospheric pressure (14.7psia (lbf/in2). The CO2 is stored in cylinders of volume 2 ft2 at a pressure of
A 14.1 g sample of CaCl2 is dissolved in 125 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming th
"Suppose a reversible heat pump transfers heat from the outdoors at 0 degrees C to a room at 20 degrees Celsius. For each Joule of work input to the heat pump, how much heat will be deposited in th
A 2.00L sample of O2 (g) was collected in a flexible container, like a balloon, over water at 25 degrees celcius and an atmostpheric pressure of 785 torr.
A mercury thermometer consists of a small glass bulb containing mercury metal connected to a glass capillary tube. when the volume of mercury increases, the mercury moves up the capillary.
Iron is biolagically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. In the blood of an adult human, there are approximately 2.60 x 10^13 re
The total pressure of a mixture of oxygen and hydrogen is 1.4 bar. The mixture is ignited and the water removed. The remaining is pure hydrogen and exerts a pressure of 0.30 bar when measured at teh
Calculate the freezing-point depression (Kf = 31.8K-kg/mol), the relative vapor-pressure lowering, the osmotic pressure of the solution at 25 C, and the molecular weight of the substance.
In one experiment, 0.865 mol of NO is mixed with 0.502 mol of O2. Determine which of the two reactants is a limiting reactant. Calculate also the no. of moles of NO2 produced.
Twenty grams of a solute is added to 100g of water at 25 degrees C. The vapor pressure of pure water is 23.76mm; the vapor pressure of the solution is 22.41mm.
One contains 0.2 mol Pb(CH3COO)2 , the second contains 0.1 mol Na2S , and the third contains 0.1 mol CaCl2 . what is the ionic equation for the precipitation reaction or reactions that occur. and Wh
A 0.5452 g sample which contained the monoprotic weak acid, propanoic acid, CH3CH2COOH, was dissolved in ~ 75.0 mL of water and titrated to the equivalence point with 35.81 mL of a 0.0893 M (molarit
Calculate the heat losses associated with microbial degradation of carbofuran (in kJ), taking into account that both energy and biomass are produced, and that energy conversion to ATP is only 40% ef
A 10 mL pipet is calibrated by dispensing exactly 10 mL of distilled water into a flask and then weighing the water to determine how much was actually delivered. The pipet can be read to 2 decimal p
A solution contains a mixture of pentane and hexane at room temperature. the solution has a vapor pressure of 258 torr. pure pentane has a vapor pressure of 425 torr and pure hexane 151 torr at room