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1 mole of a hydrocarbon of formula CnH2n was burned completely in oxygen producing carbon dioxide and water vapour only. It required 192 g of oxygen. Work out the formula of the hydrocarbon.
At 1000 deg. K, a sample of pure NO2 gas decomposes. 2NO2(g)f/r2NO(g) + O2(g) The equilibrium constant Kp is 158. analysis shows that the partial pressure of O2 is 0.14 atm at equilibrium.
How many molecules are in 22.41 L of an ideal gas at STP? Remember the answer is supposed to be in molecules
Define internal energy and enthalpy. What is the difference between the two? List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gases called air.
What is the enthalpy change corresponding to the melting of 2.5 moles of H2O? What is the system? What is the surrounding?
at constant volume, the initial pressure of a substance is 0.63 atm and the initial temperature is 283 k.calculate the pressure of the substance at 295 k.
Compute ΔU for the transformation; a = 0.136 m6Pa mol-2 ; b = 0.0391 L/mol.
Calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL and calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400. g of water.
A sample of argon has a volume of 205 cm3 when its temperature is -44.0 oC and its pressure is 712 mm of Hg. What would be the volume of the argon at STP?
Correlation of structure with the melting point - What structural aspect of these 18-carbon fatty acids can be correlated with the melting point?
C2H4 Flows into a catalytic reactor at 25atm and 300 degrees C with a flow rate of 1010 L/min. Hydrogen at 25atm and 300 degrees C with a flow rate of 1050L/min. If 11.0kg of C2H6 are collected per minute, what's the percent yield of the reaction?
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