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Calculate the molarity of a phosphoric acid(H3PO4) solution that is 84% by mass phosphoric acid and has a density of 1.87g/mL.
What spectral features including mass spectrum, proton spectron, carbon spectrum and IR spectrum allow to distinguish between eugenol and acetyleugenol
If the density of carbon dioxide in air is 0.65 mg/L, what volume is occupied by 25 kg of carbon dioxide?
A sample of sodium metal having a mass of 5.45 g reacts with excess water, and the water is later evaporated. What is the solid product that remains after evaporation, and how many grams of this product are expected to be formed
A 125.0g sample of copper is initially at 25.0oC. It absorbs 12.50 kJ heat from its surroundings. What is the final temperature to the nearest tenth degree? Specific heat copper = 0.3874 J/goC.
Calculate the concentration of ions in the following solutions, [I] in AgI in AgI solution with [Ag+] = 9.6E-9 M Ksp=8.3E-17
A 1.20 gram sample of dry ice is added to a 755mL flask containing nitrogen gas at a temperature of 25.0 degrees Celsius and a pressure of 725 mmHg. The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. wh..
Consider the acid-catalyzed cleavage of propylene oxide with 1-propanol. Provide abbreviated structural formulas for the protonated epoxide substrate and of 1-propanol
how many grams of urea must be added to enough water to obtain 115 ml of a solution with an osmotic pressure of 2.7 atm at 35 degrees celsius
This converts the nitrogen in the protein to ammonia. The NH3 that formed was distilled and collected into flask containing 50.00mL of .09552 M HCL. The resulting solution was then back titrated, requiring 37.84 mL of 0.05992 M NaOH to reach the p..
How many mL of boiling water would it take to dissolve 23g of caffeine? If the solution was cooled to 25?C, how many grams of caffeine would recrystallize out
What is the mass of a square piece of aluminum foil 100 micrometers thick and 10 cm wide? (Aluminum=2.7 g/cm^3)
Which of the following would break apart into free radicals (an atom with one unpaired electron) when a photon promotes one electron to an antibonding orbital. I. B2 II. C2 III. N2 IV. O2 V. F2
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