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Which of the following would result in an artificially LOW (<100%) yield for carbon dioxide? (HINT: Think carefully about how percent yield is calculated) Answer a.Spilling some of the reaction mixture. b.Adding too much baking soda. c.Adding too much vinegar. d. Not allowing the reaction to go to completion.
Draw the structure ( Fisher projection) of an optically inactive compound z, C4H6O6
An unknown element forms a yellow ion, XO . It forms a precipitate with silver ions. If 48.0 mL of a 0.250 mol/L solution of silver ions is added to a solution of the unknown ion, 1.856g of a red-brown precipitate are formed. Determine the iden..
If 3.98 g of copper was recovered and you started with 9.10 g of copper (II) chloride, then what is the percent yield of the reaction ?
If the density of carbon dioxide in air is 0.65 mg/L, what volume is occupied by 25 kg of carbon dioxide?
Using the average initial pH of your acetic acid solutions, and the average molarity of those solutions, calculate a value of Ka for acetic acid. when initial pH is 2.63 and average molarity is 0.06475.
2750 ml sample of 3 M Hcl solution is treated with 4.66 gm of magnesium . Calculate the concentration of the acid solution after all the metal has reacted. Assume that the volume remain unchanged-------M HCl.
what is the literature ksp value for potassium hydrogen tartrate at different
How many different tetrapeptides containing 2 molecules of alanine and 2 molecules of valine could theoretically exist?
Diamond and graphite are two crystalline forms of carbon At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Determine deltaH(rxn) for
In acid based titration, 33.65mL of an 0.148 M M HCL solution were required to neutralize 25.00 mL of a NaOH solution . What is the molarity of the NaOH solution
A solution is made by dissolving 4.055 g of FeCl3 in 500 mL of water. The freezing point of this solution is -.316 C. What is the van Hoff factor (i) for FeCl3 at this concentration? (kf for water is 1.86 C/m)
When acetylene gas, C2H2, burns, how many liters of O2 at STP are used for every 9.31 mol of acetylene burned
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