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Question: A 3 L vessel (1 L = 10-3 m3) contains 16 g of O2 gas at a pressure of 4atm.
a. How many moles of O2 are contained in the vessel?
b. What is the temperature of the gas?
c. How much energy is needed to raise the temperature of the gas by 100 K?
The difference in concentration must be sustained by coupling to reactions that have at least that difference of Gibbs energy
Identifying an unknown hydrocarbon, Is it possible to identify what the hydrocarbon is with just knowing the volume of it (9.61 ml), the mass (7.669 g/ml), density (0.798 g/ml)?
write a balanced equation for the reaction that occurs between the solutes. Calculate the concentration of each remaining ion in solution. Is the resultant solution acidic or basic
The titration is monitored with a potentiometer using a SCE reference electrode (Eref= 0.241V). the solution is buffered at ph=4.00.
Concentrated sulfuric acid (almost 100%) H2SO4 has a recognized density of 1.84 grams/cm^3. Based on this, calculate the molarity of this liquid.
Calculate the standard cell potential at 25 degrees celsius for the reaction X(s)+2Y+(aq) -> X^2+(aq)+2Y(s) where delta H = -733 kJ and delta S = -279 J/K Express your answer to three significant figures and include the appropriate units.
A horse ate some ration that was equivalent to 4000. kJ. In this case assume that none of thatenergy was stored or used in the animal's body but that all of this energy was lost in the form ofperspiration
An aqueous solution of Ni(NO3)2 is slowly added to a beaker of water with a pH of 8.46. At what concentration of Ni(NO3)2 will Ni(OH)2start to precipitate? Ksp for nickel(II) hydroxide is 1.60 x 10-14.
Problem- After tubing has been cut in the lab, what further procedure should be followed before the cut tubing is used
1. calculate how many n atoms are there in the empirical formula for this given compound when the reported analysis
The acid ionization constant of Fe(H2O)62+(aq) is 3E-6. Compute the pH of a 0.2 M aqueous solution of Fe(NO3)2. 5. Compute the solubility of Mg(OH)2 in a buffer solution at pH=10.31. The solubility product of magnesium hydroxide is 1.2E-11
Estimates show that the total energy output of the sun is 5X10^26 J/s. What is the corresponding loss in Kg/s of the sun in scientific notation
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