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A sample of propane gas occupies 625cm3 at 20 degrees Celcius and 750 torr. What is the final volume at -80 degrees celcius and 750 torr?
Spectroscopic studies have shown that the fusion reaction in the sun's core proceeds by a complicated mechanism. One proposed overall equation for the solar fusion reaction is
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25°C. Calculate the pH at 25°C for each of the following.
NO(g) + O2(g)-------- 2NO2 0.85 mol of NO is mixed 0.494 mol of O2 Calculate the number of moles of NO2 produced and Limiting reactant
Concentrated hydrochloric acid is 12 M and has a density of 1.18 g/mL. Calculate the mass in grams of a 0.025 L sample of concentrated hydrochloric acid.
the smallest whole-number coefficients: C2H6 (g) + O2 (g) = CO2 (g) + H2O (g)
When a 4.25g sample of solid ammonium nitrate dissolves in 60.00g of water in another insulating calorimeter the temperature drops from 21.0450C to 16.8700C. What is the (delta)H for the dissolution
Draw the molecular orbital diagram for the acetylide anion (C22-). Assume that order of the n=2 molecular orbitals in increasing energy is
In a gas mixture, the partial pressures are nitrogen 435 , oxygen 145 , and helium 240 . What is the total pressure ( torr) exerted by the gas mixture?
Zinc is reacted with hydrocloric acid to make hydrogen gas and zinc chloride. when 42.86 g of zinc is added to 40.11g of hydrochloric acid, 63.22g of zinc chloride were collected.
Calculate the percent ionization of arsenous acid (H3AsO3) in solutions of each of the following concentrations (Ka = 5.1e-10.) (a) 0.217 M % (b) 0.598 M % (c) 0.726 M %
Potassium superoxide (KO2) can simulate a plant-type action by consuming carbon dioxide gas and releasing oxygen gas. The other product is potassium carbonate. What is the balanced equation for this process
The vapor pressure of water above this solution is found to be 0.3624 atm at 348.0 K. The vapor pressure of pure water at this temperature is 0.3804 atm.
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