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Which of the following statements, concerning equal volumes of the gases dinitrogen monoxide, N2O,and propane, C3H8, at the same temp and pressure is incorrect.
a. they have same number of moles
b.same absolute temp
c.same number of atoms
d. same density
e.have the same number of molecules
Na2CO3(s) (sodium carbonate) can be prepared by heating NaHCO3(s) (sodium bicarbonate). If a sample of NaHCO3 is placed in an evacuated flask and allowed to achieve equilibrium with the products which are formed at 100ºC, what will the total gas p..
Calculate the minimum wavelength of light (in nm) that could break an oxygen-oxygen double bond given that it takes 499 kJ to break on mole of these bonds.
mixture(O,H) is ignited with a spark and it reacts to form (H2O)liquid water. determine the temperature of water.
What is the energy of a C-C bond in kJ/mole? Explain. How does this amount of energy compare?
what is the classification of each reactant as metal or nonmetal?
A solution is prepared by dissolving 14.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 11.50 mL sample of this stock solution is added to 55.00 mL of water.
10.08g of potassium chlorate, KClO3 is heated to decomposition according to the following equation. How many grams of O2 gas will be produced?
What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.156 M in sodium chloride and 0.094 M in magnesium sulfate?
Find out the Kb of ammonia if the pH of a buffer formed by mixing 50.0 mL of 1.00 M NH 3 and 50.0 mL of 1.00 M ammonium nitrate?
How many moles of KMnO4 are present in 25.0 mL of a 0.0900 M solution?
Calculate the heat evolved in kilojoules by the formation of the solution. Calculate the heat evoled per mole of sulfuric acid. Use n(changeH) = -(mCchangeT)
What was the Ka value calculated by the student if the pH of the solution was 2.60? Express your answer numerically using two significant figures
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