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2NO+O2 makes NO2, what mass of NO2 is formed when NO reacts with 384g O2?, how many grams of NO are required to react with this amount of O2?
If B gas at 0.221 bar is injected into a container at 665 °C that contains excess A, what are the partial pressures of all gases present at equilibrium?
A solution of sulphide (Ct = 10-6 M) is blended into a 0.4 M sodium chloride solution in a closed container. Plot a log C-pH diagram for the system, including activity coefficients in the construct
In Europe, gasoline efficiency is measured in rm km/L. If your car's gas mileage is 23.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-rm km trip in Europe?
How does the Hammond's postulate explain? a. the greater selectivity for bromination vs. chlorination of an alkane?
Elemental exonium (not a real element) con- sists of two major isotopes Abundance Mass 55% 98 amu 45% 114 amu What is the atomic weight for exonium? Answer in units of amu#question..
A stock solution is prepared by adding 21 mL of 1 M AlCl3 to enough water to make 76 mL. What is the Cl- concentration of 40 mL of the stock solution?
At 80*C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 68 mmHg respectively. What pressure must be exerted on the surface of a solution containing one mole of X, three moles of Y,
How does the mechanism you proposed in Part a support the formation of the racemic form of a single diastereomer?
Calculate the pressure (in pascals and atmospheres) exerted by a mass of 1.0 kg pressing through the point of a pin of area 1.0 x 10-2 mrrr' at the surface of the Earth. Hint. The force exerted by a
If 162 of wet is collected over water at 24 and a barometric pressure of 736 , how many grams of have been consumed? (The vapor pressure of water is 22.38 .)
How much (in grams) of the buffer (benzoic acid), would you add to the 900.0 mL of buffer to change its pH to 3.83?
Briefly explain you conclusion regarding each student's work. Detailed pH calculations are not required. KB of NH3 = 1.8 x 10 M ; KA of HA = 1.8 x 10 M.
What is the literature Ksp value for potassium hydrogen tartrate at different temperatures?
Solid aluminum reacts with aq H2 SO4 to form H2 gas and aluminum sulfate. when a sample of Al reacts, 425 mL of H2 gas is produced at 24 degree celsius at a press of 744 mmHg. How many grams of Al
A piece of galena has a volume of 3.9 cm3. If the density of galena is 7.5 g/cm3, what is the mass (in kg) of that piece of galena?
The molar heat of fusion of aluminum metal is 10.79 kJ/mol, whereas its heat of vaporization is 293.4 kJ/mol. What quantity of heat would be required to vaporize 1.68 g of aluminum at its normal boili
For each of the following sets of pressure/volume data, calculate the new volume of the gas after the pressure change is made. Assume that the temperature and the amount of gas remain the same.
At 450 K the rate constant is 15.4 atm-1s-1. How much time (in s) is needed for NOCl originally at a partial pressure of 46 torr to decay to 25.8 torr?
How much limestone must be decomposed by heating to produce 250.0 grams of lime, CaO?assuming that the limestone contains 95.0% pure CaCO3.
When the equilibrium is reached, what are all of the concentrations in solution (this is also called the equilibrium composition)?
What will be the concentration of rm H_2SO_4 in the battery after 2.40 A of current is drawn from the battery for 8.00 hours?
What does this chemical formula mean? Can you break it down bit by bit?
What volume of hydrogen gas (measured at STP) would result from reacting 75.0g of sodium hydroxide with 50.0g of aluminum?