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92.0g Na Some are cast in 76.0g of water, and allowed the reaction to occur to completion, according to the following equation: 2Na + 2H2O => 2NaOH + H2
* Determine which is the limiting reagent and how many grams of excess reagent remain unreacted.
* Calculate the theoretical yield of the reaction
* If the reaction has an 80% yield, how many grams of NaOH actually get? (Current performance)
when measured in aa quartz cuvett of 1cm path length. What is the concentration of DNA in µg/mL?
How will each of these changes affect the cell potential and why? a) Solid sodium hydroxide is added to the copper cell. b) 0.15 M iron (II) sulfate is added to the iron cell. c) Water is added to each cell so that the volume of each solution is d..
the enthalpy of fusion of methanol ch3oh is 3.16 kjmol. how much heat would be absorbed or released upon freezing 25.6
Write out the balanced overall equation for the redox reaction that could occur between these species. An electric current would have to have what minimum potential to force the reaction forward?
When 4.00 g of methylhydrazine is combusted in a bomb calorimeter, the temperature of the calorimeter increases from 25 C to 39.5 C. The heat capacity of the calorimeter is measured to be 7.794 kJ/C. Calculate the heat of reaction for the combusti..
In the reaction below, 1 atm of H2 and 6 atm of Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kp at 800 K is K = 36, calculate the equilibrium pressure of HCl.
A molecule in which centers of positive and negative charge do not coincide must be.
For each of the following experimental or calculations errors, tell of the calculated value of R, writte if would be too high, too low or unchanged.
Our simple pH meter that we have used before works on the principles deiscussed on page 829. What cell voltage would you expect from the pH probe if it is place into a beaker containing 50 mL of 1M HCl diluted with 50 mL of distilled water
Determine whether each anion or cation is acidic or basic or neutral: a. Br- b. ClO- c. C7H5O2- d. Sr2+ e. Mn 3+ f. C5H5NH+
in other words, why isn't the tetra-alkylated ortri-alkylated product formed? What are the two other isomers (structure and name) that are possible of forming?
in the reaction a rarr products a is found to be 0.490 m at t72.0 s and 0.474 m at t82.6 s.what is the average rate of
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