Determine the emf of a fuel cell
Determine the emf of a fuel cell that oxidizes hydrogen according to the reaction:
2H2 (g) + O2 (g) --> 2H2O (l)
under the following conditions: pH = 0, PH2 = 1 atm, PO2 = 0.2 atm.
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The molecular weight of citric acid is 0.030M. How many grams of citric acid (molecular weight = 192) are present in a 120ml serving assuming its density is the same as that of water?
What is the balanced equation for when strongly heated, magnesium sulfide formed a yellow crystalline depoisit on the walls of a sealed reaction vessel.
A sample of chloroform is found to contain 10.5 g of carbon, 93.1 g of chlorine, and 0.88 g of hydrogen. If a second sample of chloroform is found to contain 20.8 g of carbon, what is the total mass of chloroform in the second sample?
A 13.6 sample of NH4NO3 is dropped into a constant-pressure calorimeter containing 175 g of water at 23.5 C. what temperature will the water reach, assuming tha tthe calorimeter container does not gain or lose any heat?
If a sample containing 2.11 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. Kf = 1.86°C/m
If the reaction Fe2N (s) + 3/2 H2 (g) -> <- 2Fe(s) + NH3(g) comes to equilibrium at a total pressure of 1 atm, analysis of the gas shows that at 700 K and 800 K pNH3/pH2 = 2.165 and 1.083, respectively, if only H2 was present initially with
A buffer that contains .39 M base B and 0.21 M of its conjugate acid BH+ has a pH of 8.95. What is the pH after 0.002 moles of HCl are added to 0.25L of solution
what is the chemical formula of a homonuclear diatomic ga if it has a pressure of 1.40 atm and a density of 1.82 g/l at 27 c
The equivelence point is reached when 35.31 mL of KOH base has been added. What is the hydroxide ion concentration at the equivelence point? The Ka of propionic acid is 1.34 E -5.
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