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A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 62 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 33 s for 1.0 L of O2 gas to effuse. Calculate the molar mass of the unknown gas. (Remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0 L; that is, rate and time are inversely proportional.)
charcoal is primarily carbon. determine the mass of CO2 produced by burning enough carbon to produce 5.00 X 10^2 KJ of heat.
A mist is observed to form on the mirror at a temperature 40C. Calculate mass of water removed from the pulp (kg/min) and the volumetric flow rate of air entering the system.
a testing facility found that 8.351023 molecules of carbon dioxide were produced when a sample of octane was burned in
The reaction of methane and water is a way to prepare hydrogen according to CH4 (g) + H2O = Co2 (g) + H2 (g) a) If 995 g of CH4 reacts with 2510 g of water, how many moles of reactants and products are there when the reaction is finished
Fish are processed into Fish meal and used as a supplemen- tary protein food. In the processing the oil is First extracted to produce wet Fish cake containing 80 wt % water and 20 wt % bone-dry cake
Concentration of Fe(SCN)2+ in calibration Solutions-Recall that the concentration of Fe(SCN)2+ in the calibration solutions is essentially the concentration of SCN- initially in the solution
Calculate the molar solubility of AgI in 3.6 M NH3. The overall formation constant for Ag(NH3)2+ is 1.7 x 10^7.
What mass of C2H5OH should be added to 535 kg of the paraffin in formulating the mixture if the vapor pressure of ethanol at 35°C over the mixture is to be 8 torr? The vapor pressure of pure ethanol at 35°C is 100 torr.
When a 8.37-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 445.8 kJ of heat is liberated. What is the percentage by mass of CH4 in the mixture
Write the Net Ionic Equation and determine the standard potential for the reaction between permanganate and tin(II). From the potential
Is the reaction exothermic or endothermic. Does the reaction lead to an increase or decrease in the disorder of the system
Important information about PH calculations, Calculate the pH of the solution formed during a titration upon adding 35.0 ml of a standard .150M NaOH solution to
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