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The pressure of a gas is 817 torr at 55°C. The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 6.00 ´ 102 torr. What is the resulting temperature of the gas?
The Al2O3 does not react. If the sample residue weighs 2.489 g, what is the mass fraction of Fe2O3 in the original sample?
Suppose .30 mol of Ammonia and .40 mol of oxygen are added to a 5L container. If Y mol of water is present at equilibrium, calculate the equilibrium concentration of oxygen?
If a 200 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
The crystal structure of lithium sulfide Li2S is pictured here. The edge length of the unit cell is 5.88*10^2pm. What is the density of Li2S in grams per cubic centimeter?
Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide: 2NaI(aq) +Cl2(g) arrow I2(s) +2NaCl(aq) How grams of iodide, NaI, must be used to produce 55.6 g of iodine, I2
the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid solution? Will it be too high, too low, or unaffected
A 1.992g sample of octane, C8H18, is burned in a calorimeter that has a calorimeter constant of 144 J/celcius and contains 750.0g of water. the temperature of the water rose from 14.73 celcius to 42.78 celcius. Determine the enthalpy of combustion..
A buffer was prepared by adding 2.4 g of ammonium nitrate to 100.0 mL of 0.30 M ammonia (Kb = 1.8 × 10-5). To this solution was then added 10.0 mL of 0.30 M sodium hydroxide
Proposed a detail mechanism for the zinc mediated debromination of trans-1,2-dibromocyclohexane. The reagent used was zinc and water and heat where also added to the reaction. The products fromed included ZnBr2 and cyclohexane
Magnesium metal is used as a sacrificial anode to reduce the corrosion of underground storage tanks (made of iron, or more accurately, steel which is an iron/carbon alloy). As a result the sacrificial metal corrodes instead of the iron. Explain th..
1.00 mol HF and 0.500 mol NaOH are both dissolved in water making 1.00L solution. Calculate the pH of the solution
use the concept mof electron configuration to explain why the number of valence electrons in metals tend to be less the number in most nonmetals.
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