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0.4768 g of oxalic acid dihydrate (H2C2O4 • 2H2O) was weighed out and titrated with sodium hydroxide (NaOH) according to the procedure in the handout. Vi was recorded from the buret as 5.91 mL. Vf was recorded from the buret as 42.28 mL.
(a) Calculate the volume of NaOH used from the buret.
at 1 atm, how much energy is required to heat 55.0 grams of water at -24.0 degrees Celsius to water at 157.0 degrees Celsius
How many moles of solute are present in each of the following solutions. (a) 145mL of 0.25M NaHCO3 (b) 631.0mL of 2.25M H2SO4
Which of the following solutions is a good buffer system? A) A solution that is 0.10 M HF and 0.10 M NaC2H3O2 B) A solution that is 0.10 M NaOH and 0.10 M KOH C) A solution that is 0.10 M HC2H3O2 and 0.10 M NaC2H3O2 D) A solution that is 0.10 M HC..
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container. what is the total pressure in the container at equilibrium?
A gas-filled balloon having a volume of 5.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth),
how many moles O2 of are present? (The mole fraction of in dry air is 0.2095.) How many grams of C8H18 could be combusted by this quantity of O2
What is the percent ionization of a solution prepared by dissolving 0.0223 mol of chloroacetic acid, HC2H2O2Cl) in 1.80 L of water?
A sample of Au(ClO)3 is contaminated with LiClO. An acidified 0.2000 g of this mixture is treated with excess sodium iodide and subjected to iodometric titration.
Consider the reaction: 2SO2(g)+O2(g)?2SO3(g) What changes will occur in the concentration of SO2,O2, and SO3 at equilibrium if we were to: a. increase temperature b. increase pressure c. increase SO2 d. add a catalyst e. add helium at constant pre..
Calculate the initial effusion rate. If this rate continued how much time would pass until the pressure dropped to 0.90 bar? (actually the rate changes with pressure- indicated why using the equations). assume values for nitrogen
You are going to a birthday party and you want to give the children balloons filled with He gas. How many balloons can you fill to a volume of 2 liters if the internal gas pressure of the tank
What mass of this substance must evaporate to freeze 185g of water initially at 17 degrees Celsius? (The heat of fusion of water is 334J/g; the specific heat of water is 4.18 J/g-K.)
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