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When 1.50 mol of of CH4 reacts with excess Cl2 at a constant pressure according o the chemical equation, CH4 + 3CL2 2 CHCl3 + 3H2, and 1062 kL of heat are released. Calculate the value of ?H? for this reaction. ?H=?
A solution of 0.18 mol of the chloride salt of protonated atropine (AH^+), a weak organic base, in 1.0 L of solution has pH = 5.20.
You are given a box containing at equilibrium at 1000 K 0.102 moles/liter NH3, 1.03 moles/liter N2, and 1.63 moles/liter H2 for the reaction N2(g)+3H2(g)=2NH3(g). Calculate Kp
Give three reasons why spectrophotometric analyses are performed using a narrow wavelength band centered at ? max. Give the purpose of the following commands:
a 11.7 ml sample of a hcl solution has a ph of 2.000. what volume of water must be added to change the ph to
gold can be hammered into extremely thin sheets called gold leaf. if a 202-mg piece of gold density 19.32 gcm3 is
supoose that ammonia, applied toa field as a fertilizer, is washed into a farm pond containing 3.0 x 10^6 L of water. if the pH of this pond is found to be 9.81
magnesium burns in air to produce magnesium oxide mgo and magnesium nitride mg3n2. magnesium nitride reacts with water
A solution is made by combining 15.0 mL of 18.0M acetic acid with 5.50g of sodium acetate and diluting to a total volume of 1.50 L. Calculate the pH of the solution.
The first ionization energy of magnesium is 738 kJ/mol, the second ionization energy of magnesium is 1451 kJ/mol, and the electron affinity for chlorine is -349 kJ/mol. Prove mathematically using Hess's Law that the formation of magnesium chloride..
Assume the form ?=Ne^(-ax^2) for the ground-state wavefunction of the harmonic oscillator, and substitute this into the schrodinger equatoin. Find the value of a that makes this an eigenfunction.
What is the pH of a 0.15 M solution of aqueous Acetic Acid. The Ka of acetic acid is equal to 1.7 x 10^-5
A balloon filled with H2(g) at STP has a volume of 2.24 .What is the final gas volume if 0.10 mol He(g) is added to the balloon and the temperature is then raised to 92.0 celsius while the pressure and amount of gas are held constant?
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