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Ascorbic acid is used to improve the nutrient of crops. it is composed of 36.20% carbon, 4.90% hydrogen, and 48.90% oxygen. The molar mass of ascorbic acid is 176.0 grams per mole. Determine the empirical and molecular formulas for ascorbic acid.
how many NH4Cl moles and how many NaOH moles would you need? About how many more moles of NaOH could you add before the buffer breaks down?
What is the pH of a solution prepared by mixing exactly 56.1 mL of 0.200 M HC2H3O2 with 14.9 mL of 0.400 M KOH. (Ka for acetic acid equals 1.8 x 10-5).
Calculate x, the number of molecules of water in oxalic acid hydrate(H2C2O4-xH20), from the following data:5.00 g of the compound is made up of exactly 250 mL solution, and 25.0 mL of this solution requires 15.9 mL of .500M NaOH solution for neutr..
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
How many liters of ethylene glycol
A balloon is inflated with 0.2494 g of helium to a pressure of 1.26 atm. If the desired volume of the balloon is 1.250 L what must the temperature be in degree celcious
a 0.500 reaction vessel equipped with a movable piston is filled completely with a 3.00 aqueous solution of hydrogen
You have 100.0 mL of 0.100 M aqueous of each of the following acids: HCN, HF, HCl, and HC2H3O2. You titrate each with 0.100 M NaOH (aq). Rank the pHs of each of the solutions when each are titrated at the equilibrium point, from highest to lowest ..
How many moles of chloride were present in the unknown. d. What mass of cholride was present in the unknown? e. What was the mass percentage of cholride present int the original sample
Problem- Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M+ = 58.0423.
Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 degrees C ) in the absence of a catalyst.
1.285g sample of Na2SO4 is exposed to the atmosphere and found to gain 0.393g in mass. What is the percent, by mass, of Na2SO4*H2O in the resulting mixture of anhydrous Na2SO4 and the decahydrate
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