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What is the equilibrium constant Kc for the reaction below? Assume temperature is 25oC. (Hint, Represent the reaction below as a sum of reactions and then combine the corresponding K values to obtain Kc for the reaction below.) HF(aq) +NH3(aq) <----> NH4F(aq) What is Kc?
A 12.4 g sample of CaCl2 is dissolved in 112 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·..
what amount of heat would need to be added to 5.0 x 103 g of water to change its temperature from 21c to 84c?
What is the pH of a 0.0700 M solution of H2A? What are the equilibrium conecntrations of H2A and A^2- in this solution? pH = ? [H2A} = ? [A^2-] = ?
Description of Chemistry - Other, What is meant by Molality of a solution and Solute particles? Define. How many solute particles are there in 1m solution containing these substances in one kg of water?
For the reaction 2HCl + Na2CO3 to 2NaCl + H2O + CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP?
Calculate the OH- of each aqueous solution with the following H3O+ A baking soda 1.1 X 10-8 M B orange juice 2.1 X 10-4
477 j amount energy is added to a 74.0 grams sample of h2o at a temperature of 21 degree celsius. determine what will
The bomb that destroyed the Murrah Federal Office building in Oklahoma City in April 1995 was constructed from ordinary materials: fertilizer(ammonium nitrate) and fuel oil
Determine the order of the reaction and write a narrative of your approach to determine its order. What is the rate constant for the reaction?
Given the reactant side of the total ionic equation for the neutralization reaction of potassium hydroxide KOH with hydrochloric acid HCl, write the total ionic equation
Hydrogen Sulfide gas has toxicity comparable to Hydrogen Cyanide, but because of its intense odor its presence is observed at concentrations well below toxic levels.
In a 0.34 M solution of sodium acetate, what concentration of hydronium ions comes from the self-ionization of water? pKb for acetate anion is 9.246
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