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A sample of solid ammonium sulfide (NH4)2S, is placed in a closed bulb which is then filled with 0.0150 mol of inert He gas. The pressure of the He at 25°C is 145 mm Hg. The bulb is then heated to 325°C and all of the (NH4)2S decomposes to form gaseous NH3 and H2S, with a resulting total gas pressure in the bulb of 875 mm Hg. What is the partial pressure of the NH3 gas in the bulb at 325°C? (Assume that the volume of the solid (NH4)2S is negligible compared to that of the bulb).
when liquid water is put into an evacuated vessel at 25 celsius what is the sign of the change in enthalpy, entropy, free energy, and temperature for the system during this process?
What is the pH at the equivalence point when 100.00 mL of a 0.200 M solution of acetic acid (CH3COOH) is titrated with 0.10 M NaOH to its end point?
irregularly shaped object if the initial volume of water was 23.0 ml and the volume rose to 54.3 ml after the object was added?
oxygen are required to react with 5.62 mol nitrogen to produce dinitrogen trioxide?
The [OH-] = 1.3 x 10^ -6 M for a 0.025 M solution of a weak base. Calculate the value of Kb for this weak base.
Identify the substance produced in the liver that helps catalyze this reaction.
It is also noted that NO3 is a reaction intermediate. Suggest a plausible reaction mechanism
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
The equation for the combustion of acetone is: 2 C3H6O + 8 O2 ---> 6 H2O + 6 CO2 + 852.6 kcal How much heat will be given off if 0.87 mol of acetone is completely burned?
How many grams of Fe(NO3)3 · 9 H2O are required to prepare 300.0 mL of a 0.249 M solution of Fe(NO3)3 · 9 H2O?
How many grams of Mg2SO4 is required to make up 100mL of 20g/L Mg2SO4 solution in water?
compunds made up from ions from S2- and sc3+ has amelting temperture of 1776 C what type of bonding is there?
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