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A mixture of .220 moles CO, .350 moles H2 and .640 moles He has a total pressure of 2.95 atm. What is the pressure of CO?
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 9.30 MJ of energy (in the form of heat) if the temperature of the sodium
What is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
What mass of carbon dioxide is present in 1.00m^3 of dry air at a temperature of 25c and a pressure of 731torr? Calculate the mass percentage of oxygen in dry air.
How much heat energy is required to convert a 1.00 L block of ice at -40.00 degrees Celsius to steam at 250.0 degrees Celsius?
Draw all resonance structures for anisole to show why the methoxy group directs incoming electrophiles
Two 20.0-g ice cubes at -18.0 °C are placed into 295 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
how many moles of magnesium oxide are produces by the reaction of 3.82g of magnesium nitride with 7.73g of water? how many grams of excess reactant is left over?
The free energy change Delta G at 2400 K is equal to 1.22*10^5 J/mol. Calculate the equilibrium constant at 2400 K
find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury
Calculate the pH change after 100.0 mL of 0.0500M HCl is added to 400.0 mL of a buffer solution that is 0.200M in NH3 and 0.300M
You have 100 moles of solvent (not water). You have determined that 100g of dissolved sucrose incrases its boiling point temperature by 10C. For 100 moles of the pure solvent, how much mass (in grams) of salt
The solution to Equilibrium constant, A certain gas mixture held at 395C has the following initial partial pressures: P(Cl2) = 351.4 torr; P(CO) = 342.0 torr and P(COCl2) = 0.
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