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A sample of air contains 72.75%nitrogen, 26.45% oxygen, 0.05% carbon dioxide, and 0.75% argon, byvolume. How many molecules of each gas are present in 1.00 L of thesample at 25°C and 1.00 atm?
What would be the potential of the Cu-Zn cell be if the concentration of Cu2+ was 1.00M while the concentration of Zn2+ was 0.60M
How does adding a small amount of a grignard reagent solution to a Grignard reaction help the reaction get started? Hint: The presence of water (moisture) is a major reason a Grignard might not start.
The label claims this solution is 3.0 % (w/w); that is there are 3.0 grams of H2O2 in every 100 grams of solution. What is the molar concentration of this solution. Assume a density of 1.00 g mL
question the heat of vaporization of ccl2f2 is 289 jg.what mass of this substance must evaporate in order to freeze
The next most abundent isotope is 26Mg, relative atomic mass 25.98259. The third Isotope is 25Mg whose natural abundance is in the ratio of 0.9083 to that of 26Mg. What is the relative atomic mass of 25Mg?
The amount of H2O2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate soln. MnO4-(aq)+H2O2(aq)--Mn2+(aq)+O2
what is the total number of electron domains for a molecule having trigonal pyrmidal molecular geometry such as NH3
How much carbon dioxide in kilograms is produced upon the complete combustion of 29.1 L of propane (approximate contents of one 5-gallon tank). assume that the density of the liquid propane in the tank is 0.621 g/mL.
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
a chemical reaction release 1240 J of energy. the energy is all absorbed by water (423 g) containing the reactants. if water was initially at 19.6 degrees, what will be it final temperature
Cabernet Sauvignon with a pH of 3.64. How many times more acidic is the Sauvignon Blanc? Please show work thoroughly and answer both questions.
53.5 g of an ideal gas of molecular weight = 30.5 g/mol are confined at a pressure of 133 mmHg. The density of the gas is 0.228 g/L. Compute the temperature of the gas in degrees Celsius.
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