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Calculate the number of moles of ions present in 66.8 g of a solution that is 2.11% Fe(NO3)3 by mass.
a) There are 0.00583 moles of ions in this solution.
b) There are 0.276 moles of ions in this solution.
c) There are 0.00146 moles of ions in this solution.
d) There are 0.0233 moles of ions in this solution.
e) There are 1.10 moles of ions in this solution.
The precipitate of CaC2O4, weighed 1.437 grams determine the molarity of calcium chloride in the solution?
Consider the mechanism of a reaction betwwen trans-stilbene and bromine. What isomer do you expect to be the reaction product? Explain your answer. Does the outcome of the experiment support your analysis?
Suppose the reaction Ca3(PO4)2 + 3H2SO4 ------ > 3CaSO4 + 2H3PO4 is carried out starting with 103 g of Ca3(PO4)2 and 33.7 g of H2SO4. How much phosphoric acid (H3PO4) will be produced?
The venom of biting ants contains formic acid, HCOOH (Ka=1.80*10^-4 at 25 C). What is the pH of a 0.0065 M solution of formic acid?
a mixture of gases containing .20 mol of SO2 and .2 mol of O2 in a 4.0L flask reacts to form SO3. If the temperature is 25C, what is the pressure in the flask after reaction is complete?
A mixture of CO, CO2 and O2 is contained within a 275 mL flask at 0C. If the total pres- sure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr, what is the partial pressure of O2?
if 0.100 M HCl were titrated with 0.100 M NaOH, what would be the pH of the solution: a. before the addition of NaOH? b. at the equivalence point? c. at the halfway point?
Discuss the differences observed in the IR and NMR spectra of 3-nitrophthal-hydrazide and luminol that are consistent with reduction of the nitro function to an amino group in this experiment.
What is the minimum mass of each reactant necessary to produce 200 g of sulfuric acid in nthe following reaction?
List the chemical names and number of atoms for each chemical for each of the following equations.
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for t..
Give two reasons why the product is concentrated in the distillation flask during a continuous solid-liquid extraction. 2) what difficulties may be encounter during the determination of the melting point of caffeine?
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