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Ammonium nitrate decomposes to N2O and water at temperatures between 250C and 300C. Write a balanced chemical reaction describing the decomposition of ammonium nitrate, and calculate the standard heat of reaction using the appropriate enthalpies of formation.
What is the sum of the H-X-H bond angles (in degrees) in the following hydrides. BeH2, BH3, CH4 Calculate the bond angle for each molecule and add the three values to get your final answer.
Based on their major resonance form (draw) rank according to the length of c-o bonds: carbon dioxide, carbonate, carbon monoxide
A chlorine atom can occupy one of the nine possible sites. When a bromine is added to the system it can occupy one of hte eight sites not already occupied by the chlorine so there are 9 x 8 or 72 possible microstates. What is the change in entropy..
A solution is 0.20M Ba(OH)2. How many moles of H+ must be added to neutralize 100.0ml of the solution
A mixture of 1.10 g H2 and 1.51 g He is placed in a 1.00 L container at 25°C. Calculate the partial pressure of each gas and the total pressure of PHe.
a piece of metal with mass of 125grams is placed into a graduatedcylinder that contains 25.0ml of water raising the
a 10.1 g sample of cacl2 is dissolved in 119 g of water with both substances at 25.0degc. calculate the final
A 30.5 g sample of an alloy at 91.8°C is placed into 50.5 g water at 22.1°C in an insulated coffee cup. The heat capacity of the coffee cup (without the water) is 9.2 J/K.
1 what is the molarity of a kfaq solution containing 116g of kf in 1.00 l of solution?2 what is the molarity of an
How would you compare the molar enthalpies of neutralization for a monoprotic acid, a diprotic acid, and a triprotic acid? Write the balanced chemical equations and include molar enthalpy values of each chemical reaction to support your conclusion..
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral?
An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R a=..
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