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1. If 12.26L of gas A reacts according to the following equation 2A(g)+3B(g)à9C (g) + 6D(g)what volumes of gases C and D are produced?
2 a.) If 58.3 grams of a 14% (m/m) solution of NaOH were boiled to dryness, how much NaOH would remain?
b.) If the recovered NaOH (from part a) were re-dissolved in 1.22kg of water, what would the resulting molaity be?
3. How much concentrated acid is required to make 250mL of 3.50 M HCl?(Concentrated hydrochloric acid is 12.1 M.)
4. If 2.20 L ofa gas at 754 torr and 580 mL of gas at 0.988 atm are combined and allowed to diffuse in a 6.00L container, what is the total pressure of the new system?
5. A sample of water at 0 degrees celcius releases 6.7 kJ of energy.How much ice is formed? (Heat of fusion of water = 335J/gHeat of vaporization of water = 2.26 kJ/g)
200.0 mL of 0.750 M calcium nitrate is added to 100.0 mL of 0.500 M ammonium sulfate. What is the mass in grams of precipitate formed
you will be using 1.4 grams of salicylic acid to make aspirin. salicylic acid is the limiting reagent and one mole of
A solution contains 2.0×10-4 M Ag+ and 3.6×10-2 M CO32-. Determine Qsp for Ag2CO3. Will Ag2CO3(s) precipitate? [Ksp for Ag2CO3 is 8.1×10-12]
Calculate delta U of a gas for a process in which the gas absorbs 3 J of heat and does 10 J of work by expanding
There are 100 grams of water in the bucket, how much heat did the 100 grams of tungsten conduct to the water what was the initial temperature of the hot tungsten? Ctungsten = .04 cal/g×°C
Determine the pH of a solution that is 1.75% NaOH by mass. Assume that the solution has density of 1.01 g/mL.
A chemistry handbook lists the solubility of sodium Iodide as 184 grams per 100mL of water at 25 degrees celsius. How many moles of NaI can be dissolved in 100mL of water at 25 degrees celsius?
a quantity of 2.0 102 ml of 0.862 m hcl is mixed with 2.00 102 ml of 0.431 m baoh2. how many moles of water are
determine the entropy change for freezing 6.33 grams of c2h5oh at 158.7 k? h -4600 jmol. express your answer in units
The bond energies increase in the order: O2^1
What would you expect to observe in terms of the angle of rotation if you were to double the concentration of a sample, but kept all other variables constant?
Explain (thermodynamics/free energy coupling) why a compound with a phosphate group whose free energy of hydrolysis is more negative can transfer phosphate to another compound to make a phosphorylated product whose free energy of hydrolysis is les..
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