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a) Calculate the work done in joules by the reaction when 0.21 g of Na reacts with water to form hydrogen gas at 1°C and 3.0 atm in an open container.
2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
b) Which of the following is the correct statement?
No work is done by the system or the surroundings
The work is done by the system on the surroundings
The work is done on the system by the surroundings
Draw the enantiomer of cis-1-chloro-3-methylcyclopentane which is R at C-1. 1) What is the configuration of this molecule at C-3 (R and S)?
Would you expect to recover 100% of the desired compound from an impure sample using solution recrystallization?
the gas sample weighs 2.62grams then computes the molecular weight and determines the identity of the gas.
What is the pH at equivilance point? c. What is the pH of the solution when 106.4mL of 1.721 M NaOH has been added to the 0.591 M acetic acid solution?
the total elute from the column was diluted to 250 mL and a 50 mL aliquot was titrated with 11.35 mL of 0.10359 M sodium hydroxide. Calculate the percentage of ammonium ion in the sample.
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. what is the final volume of the gas?
the electron shifts resulting in the ring closure. draw diagrams of the products.
A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.740 g NaCl per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane
How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing 10.0 g of histidine hydrochloride (His HCl, FM 191.62) to get a pH of 9.30?
No inflection points were observed with the HCl titrations but two were observed in the titration with NaOH. One occurred after 3.29 mL of titrant had been added and another after a total of 18.61 mL of NaOH had been added. Calculate the concentr..
Calculate the concentration of Iron(II) ions in a solution that contains 0.10M Fe(NO3)2 and 1.00M NaCN.
It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n=1 to n=∞.
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