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2 Co (NO3)3 + 3 (NH4)2 S = Co2 S3 +6NH4 NO3 How many nitrogen atoms are on each side of the equation?
Ammonium Hydrogen sulfide decomposes on heating, NH4HS(s) NH3 (g)+H2S(g). If Kp for this reaction is .11 at 25 degrees celcius (where partial pressures are measured in atmospheres), what is the total pressure in the flask at equilibrium
A 47 kg sample of water absorbs 348 kJ of heat. If the water was initially at 28.7 C what is its final temperature.
A solution contains 0.10 M I- and 0.10 M CO32-. In an attempt to separate the ions, Pb(NO3)2 is slowly added to the solution. (a) Identify the precipitates that could form and predict which precipitate will form first.
Why should you never heat a cooled system, and how does this rule apply to distillation
Write a balanced chemical equation for the reaction of HNO3 with S to form H2SO4, H2O and NO2. How many moles of HNO3 and H2O are there
A Mercury barometer reads 743.5 mmHg. If the density of mercury is 13.523 g/cm^3 at 80.0 degrees C, what would be the height of a water column be if the density of water is 0.972g/cm^3 at 80.0 degrees C
Write a net ionic equation for the reaction that occurs when excess hydrobromic acid (aq) and iron(II) sulfide (s) are combined. Include states
Calculate the pH for 5 x 10-10 M HClO4. Please show work. The answer should come out to pH7 when auto-ionization of water is factored
name and outline the concept which is introduced when more than one valid lewis structure can be drawn for a given
From 15 mL H2O2 solution 22.0 mL gas evolved at 28.0 degrees Celcius and 740 Hgmm pressure. Calculate the concentration of the original H2O2 solution in mol/dm^3 unit.
Assuming the same mass of each, which of the following substances will have the highest temperature change if they all absorb the same amount of heat Gold
calculate and compare the enthalpy of monobromination and monochlorination for the given alkyl position
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