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the 20 ml of water added to the erlenmeyer flask is to be previously boiled deionized water. Since water does absorb CO2 from the atmosphere and since CO2 dissolved in the water causes it to be slightly acidic , will the use of deionized water that has not been previously boiled cause the mass of the acetic acid in the vinegar to be calculated as too high or too low
A solution is made by dissolving 26.44 g of (NH4)2SO4 in enough H2O to make 50.75 mL of solution.What is the molar mass of (NH4)2SO4?
Magnesium has three isotopes, Mg-24, Mg-25, and Mg-26. The percentage abundance of each in order is 78.70%, 10.13%, 11.17%.
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
The ionization constant, Ka, for HOI(aq), hypoiodous acid, is 2.3 × 10-11. What is the pH of a 0.050 molar solution of sodium hypoiodite, which contains the hypoiodite ion?
The distribution coefficient, K= conc. in ligroin/conc. in water, between ligroin and water for solute A is 7.5. what weight of A would be removed from a solution of 10g of A in 100 mL of water.
This precipitate was removed and the excess hydrazine was found to be equivalent to 75 mL of 2.50 X 10-2 mol/L acidified potassium iodate(V)
If 12.6 grams of iron (III) oxide reacts with 9.65 grams of carbon monoxide to produce 7.23 g of pure iron, what are the theoretical yield and percent yield of this reaction?
Calculate the fraction of atoms in a sample of argon gas at 360. K that have an energy of 14.0 kJ or greater.
If there are three electrons in 2p, the electrons will differ in: a) principle quantum number b) secondary quantum number
The [Br] of the resulting solution if 0.672 M. Assuming the volume is additive, calculate the molarity of the first solution?
Calculate the number of moles of ions produced when one mole of Co(NH3)4Cl3 is dissolved in water.
If you mix 10.0 grams of CH3SH with excess CO and 8.65 grams of CH3COSCH3 is produced, what is the percent yield of the CH3COSCH3?
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