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Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e-, how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of electricity per month, which corresponds to approximately of electrons at the voltage of a fuel cell. 2.65*104
Chlorine reacts with water to produce hydrochloric acid. Suppose 2.5 kg of chlorine were added to an olympic-sized swimming pool. How many grams of calcium carbonate would be needed to neutralize
what is the relative error in the determination of a density for which the accepted value is 0.945 g*cm^-3 and the experimental value
How many liters of CO2 will be produced with the complete combustion of of methane (CH4) with 4.3L of oxygen?
If 7.50 g of the unknown compound contained 0.250 mol of C and 0.500 mol of H, how many moles of oxygen,O, were in the sample?
calculate the osmotic pressure in torr of 6.00 L of an aqueous 0.889 m solution at 30.°c, if the solute concerned is totally ionized into three ions.
What volume of a 0.170 M NH4I solution is required to react with 963 mL of a 0.440 M Pb(NO3)2 solution? How many moles of PbI2 are formed from this reaction?
How many grams of the solid can be formed from 268 g of calcium nitrate and 115 g of phosphoric acid?
The balloon is designed to continue its ascent to an altitude of 30 km, where it bursts, releasing a package of meteorological instruments that parachute back to Earth.
What mass of C4H6 in grams is consumed in the reaction below when 39.8 grams O2 (g) are also consumed? C4H6 (g) + O2 (g) ' CO2 (g) + H2O (g) (not balanced)
Why is acetanilide more reactive than methyl benzoate in a competetive nitration
how many grams of KO2 are needed to produce 885.0 L of O2 at 22.0 degrees Celsius and 1.00 atm
Compute the equilibrium partial pressures of Carbon dioxide and CO gases. If equilibrium constant Kp for this reaction =1.52,
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