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You have weighed out 520 mg of methyl oleate. Knowing that the sample you received only contains 70 % of methyl oleate, how many mmole of methyl oleate did you weigh out? (2 digits after the decimal point)
How many grams of oxygen are collected in a reaction where 231 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
the chloroform would remain as liquid in the flask after equilibrium is established between liquid and vapor chloroform? (the vapor pressure of chloroform at 20 degrees C is 0.208 atm)
Calculate the percent composition of copper in the hydrate CuSO4.5H2O based on atomic weight data.
What is the number of moles of atoms of oxygen contained in 49 grams of sulfuric acid, H2SO4?
What is an alternative analytical procedure for determining the quantity of water
How much magnesium chloride would you have to purchase to make up 10.0 L of bath water saturated with magnesium chloride
lead(II) sulfide was once used in glazing earthenware. It will react with hydrogen peroxide to form lead (ii) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265g of lead(ii) sulfide?
Perchloric acid is the strongest of the halogen oxoacids while hypoiodous acid (HIO) is the weakest. Explain this in terms of the structure, etc. of the two acids
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to seperate and identify these ions. Describe the results you would expect to see for each ion, if that ion were present.
Calculate the heat released (kJ) in the reaction of 2.20 g of sulfur dioxide gas and excess oxygen gas to form sulfur trioxide gas
What is the weight percent concentration of sodium carbonate in your unknown if it takes 37.25 mL of 0.1018 M hydrochloric acid to reach the second equivalence point of the titration
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