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determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
Consider the following on data on Bell Lake, Based on the Ksp for Al(OH)3 of 1 x 10-33 what are the highest theoretical concentrations of Al3+ at these pH values, in µg /L?
The final temperature of the water and metal was 25.0 C. Assuming no heat is lost to the surroundings,calculate the specific heat of the metal and estimate its atomic weight
How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?
A 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 ?C to 70 ?C .What is the speci?c heat capacity of this liquid.
Using a sample of 350. mL air is collected at 35 Celsius has a pressure of 550. torr. if it is allowed to expand to 425 mL at 57 Celsius then What pressure will the air exert?
At a temperature T, a previously empty 5.00L flask is prepared by adding 1.20 mol SO2 and 1.5 mol of O2. Determine the concentrations of SO2, O2 and SO3 once equilibrium is established. KC=963
A 12 m 11 m 3.0 m basement had a high radon content. On the day the basement was sealed off from its surroundings so that no exchange of air could take place.
How much heat does your body lose when 1.8 of sweat evaporates from your skin at 25 ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 is 44.0 .
If 30.0mL of .150M calcium chloride is added to 15.0 mL of .100 M silver nitrate what will be the final concentration of all ions the remain in the solution?
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
What time will it take 10.0 mL of Chlorine gas to effuse through a porous barrier when it has been noticed that 76.3 min are needed for 10.0 mL of Hydrochloric acid gas to effuse through the same barrier.
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?
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