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Consider the reaction: H2(g) + CO2(g) ? H2O(g) + CO(g) is 4.2 at a 1650C. Initially 0.50 mol of H2 and .50 mol of CO2 are injected into a 5.0 L flask. Calculate the concentration of CO at equilibriu
If acetaminophen happened to be the unknown component how would one separate it from sucrose and aspirin? Generate a separation flow chart based on the experimental procedure above
Approximate the percent increase in waist size when a 155 lbs person gains 40 lbs of fat. Assume the volume of a person can be modeled by a cylinder that is 4 ft tall. The average denisty of a human
Assume the volume of a person can be modeled by a cylinder that is 4 ft tall. The average denisty of a human is 1g/cm3 and the average density of fat is .918 g/cm3.
What effect did the addition of acetanilide have on the melting point of the unknown component. What about the addition of phenacetin
Briefly discuss how the solubility, crystallization and extraction techniques aid one in separation of the components of "Panacetin".
At 25 degrees C, what are the molar H3O+ and OH- concentrations in (e) 0.200 M NaOCl? (f) 0.0860 M CH3CH2COONa
if I weigh KHP to use in an experiment (to titrate with NaOH ) on a triple beam balance opposed to analytical scale to eventually find molar mass of unknown NH4 salt, what effect, if any, would this
The tricky part of this multi step synthesis is the isolation of the neutral p-aminobenzoic acid in the second step. Why is isolation so difficult
draw the structure of p-aminobenzoic, and show all importnant resonance structures for this molecule
When you initially standarized your NaOH sollution, you diluted your HCl stock solution and added water to it. If you used 24.8 ML of 0.18 M HCl stock solution and added another 26.2 mL of water, wh
The synthesis of zinc iodide was performed using 1.7748g of zinc and 1.1185g of iodine. Determine the limiting reactant and calculate the theoretical yield of zinc iodide in grams
If a pure R isomer has a specific rotation of -134.0°, and a sample contains 60.0% of the R isomer and 40.0% of its enantiomer, what is the observed specific rotation of the mixture
Place the following molecules and ions in order of increasing bond angle about the central atom, and explain decision
The student uses poor lab practice by writing down the mass of his unknown sample on a piece of paper towel and then copies down the value incorrectly onto his data page. The actual mass of the samp
Sodium bromide, used to produce silver bromide for use in photography, can be prepared as shown in the following equations. How many kilograms of iron are consumed to produce 4.15 × 104 kg NaB
Calculate the concentration of Na+ ions (in mol/L) for each of the following. a) A 41.0 mL sample of 2.0 M Na3PO4 which has been diluted to 300.0 mL b) 8.50 g Na2CO3•5H2O(s) is made up in a tot
Calculate the theoretical yield of K2C2O4 in grams. If the % yield of the reaction is 82.4 %, what mass of K2C2O4 is isolated
Silver carbonate will decompose when heated as shown in the unbalanced chemical equation below. An impure sample containing 84.1 % Ag2CO3 by mass is heated to produce 9.02 g of oxygen (O2). Calculat
A particular reactant decomposes with a half-life of 171 s when its initial concentration is 0.329 M. The same reactant decomposes with a half-life of 245 s when its initial concentration is 0.230 M
A 30.00mL sample of 0.1234M hypobromous acid (HBrO) is titrated with a 0.2555M potassium hydroxide solution. (Ka for hypobromous acid = 2.5x10^-9) How many milliliters of potassium hydroxide solutio
Why is it not possible for the molar mass of a monoprotic acid to have a value less than 1g/mol
You are given 10.0 of aluminum and 15.0 of chlorine gas. Part A If you had excess chlorine, how many moles of of aluminum chloride could be produced from 10.0 of aluminum
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
A solution containing .2g of an unknown substance in 2.5 g of cyclohexane is found to freeze at 5.1 C what is the molar mass of the unknown substance