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Determine how many grams are there in 4.5+10 22 molecules of Barium nitrate?
Using a sample of gas of 23.6 grams that exerts a pressure of 1293 torr in a container of 17.5 Litres at the temperature of thirty seven degree Celsius then determine what is the molar mass of a gas ?
in an extraction of benzoic acid from a three part mixture containing benzoic acid methyl orange and previously
How many grams of propane (C3H8) are required to heat all of the water in a 50 gallon water heater from 23.4oC to 65.0oC if the water heater (the jacket which contains the water)
Assuming that the initial pressure of X(2)(the 2 is at the bottom) was 0.10 bar, calculate the value of K for the decomposition.
What was the percentage by mass of Mg(OH)2 in the original sample? [Hint: When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g). Assume that all of the CO2(g) leaves the solution without reacting.]
a sealed flask contains 0.65 g of water at 28 circ rmc. the vapor pressure of water at this temperature is 28.36 rm
What is the equilibrium partial pressure of NO in the air at 1000K if the partial pressure of nitrogen is 0.80bar, the partial pressure of oxygen is 0.20 bar and delta G for the following reaction is 77.772kj/mole. 1/2N2(g) + 1/2 O2(g)----NO (g)
Determine the molarity of a solution made by dissolving 20.0 g of NaOH in sufficient water to yield 436 mL of solution.
What is the pressure in kilopascals in s 38.0L balloon st 22 C filled with hydrogen produced by the reaction of 854.25 g of potassium with water
Describe the type of compound that could have each of the following types of attractive forces: a) dipole-dipole attractions; b) Hydrogen bonding; c) dispersion forces.
By what factor does the fraction of collisions with energy equal to or greater than activation energy of 100kJ/mol change if the temperature increases from 19.0 c to 50.0 c ? Give in scientific notation.
Ethanol (CH3Ch2OH) the intoxicant in alcoholic beverages, is also used to make other organic compounds. In concentrated sulfuric acid, ethanol forms diethyl ether and water.
Calculate the energy of a photon of electromagnetic radiation at the following frequency 103.7 (typical frequency for FM radio broadcasting) in J.
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