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Explain what is the pH of the solution when 18.30 mL of 0.137 M trisodium hemimellitalate (trisodium benzene 1,2,3, tricarobxylate) is mixed with 25.00 mL of 0.274 M HNO3 to two d.p?
If 3.8 kcal is released by combustion of each gram of glucose, how many kilocalories are released by the combustion of 1.41 mol of glucose?
How many moles of N2O3 are needed so that you have 2.55 x 1024 oxygen atoms.
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
Calculate the freezing point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0 g of water. Kf = 1.86 degrees C/m and Kb
A 20.5 g sample of protein dissolved in water to prepare 500ml solution shows an osmatic pressure of 3.72 torr at 27 degrees C. Estimate the molar mass of the protein
Give the structural formulas for all of the different alkenes that can be hydrogenated with h2/pt to produce n propyl cyclohexane
identify the unknown gas.what is the mass of the solid nh4cl formed when 73.0 g of nh3 are mixed with an equal mass of
Use ICE table and henderson-hasselbach equation to calculate pH of BUFFER A after your particular volume of acid was added to achieve pH change of 1.0.
Consider the reaction when aqueous solutions of sodium sulfide and manganese(II) sulfate are combined.
a student begins with 5.00 mL of acetic anhydride and 2.08 g of salicylic acid. Once the reaction is complete, the student collects 2.01 g of aspirin
Calculate the volume of a sample of carbon monoxide at -60.6°C and 801 torr if it occupies 29.4 L at 372 K and 189 torr.
question a student dissolves some ammonium nitrate nh4no3 in water notices that the beaker gets cooler as the solid
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