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What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 500 mg of acetylsalicylic acid each, in 300 {mL} of water?
1.Which contains the most atoms of chromium? 0.025mol,6.0*10^21 atoms, or 1.5g of Cr?
the solubility of kno3 is 155g per 100g of water at 75c and 38.0g at 25c. what mass of kno3 will crystallize out of the
Both pieces are placed in a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter (c of copper = .387 J/gK)
Calculate the energy change, in J, for 1 gmol of H2O 1) 0 to 100km/h 2) 0 to 100m 3) at 100'C from 0.1 bar to 1 bar 4) at 5bar from 0 to 100'C 5) Dissociating to H2 and O2 at 25'C
a student prepared aspirin in a laboratory experiment using the reaction. the student reacted 1.50g salicylic acid with 2.00g acetic anhydride. the yield was 1.50g aspirin. calculate the theoretical yield and the percent yield for this experiment.
Cyclohexane, C6H12, undergoes a molecular rearrangement in the presence of AlCl3 to form methylcyclopentane, CH3C5H9, according to the equation C6H12 >>> CH3C5H9 If Kc=0.143 at 25*c for this reaction, find the equilibrium concentrations of C6H12 a..
if you burn 1.5 mol C3H8 according to the following reaction C3H8 +5O2 = 3CO2 + 4H2O how many grams of carbon dioxide are produced.
Suppose that you have 1.55grams of nitroglycerin( also known as nitroglycerine, trinitroglycerin, trinitroglycerine) in a 603.0 mili litres of steel container at 20 degree celsius and one atm pressure.
calculate the energy change for the reaction given the following ionization ie energy and electron ea affinity values.
how do you calculate the ph and poh of an aqueous ammonia solution that has an oh - concentration of 1.9 x 10 -3 ? what
what is the magnitude of the maximum stress that exists at the tipof an internal crack having a radius of curvature of
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
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