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When a mixture of PH3, P2, H2 comes to equilibrium at 873 K according to the reaction 2PH3 (g)= P2(g) +3H2(g) Kp=398 at 873K, where P2=0.417 atm and H2=.826 atm. what is PH3?
There is an integral membrane protein that symports an alanine and 2 Na+ ions from the plasma into the cytosol of the liver cell. What is the free energy of symporting alanine and 2 Na+ from the plasma into the cytosol of the liver cell?
Determine the delta H of decomposition of 1.000 mole of solid KCIO3 into solid KCI and gaseous oxygen.
Determine the enthalpy change for the reaction. 2NO2 (g) -> 2NO(g) + O2(g) These are the given equations: NO + O3 -> NO2 + 02 DeltaH = -198.9 kJ / mol O3 -> (3/2)O2 DeltaH = -142.3 kJ/mol
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
The reaction that you will conduct in this experiment is known as a "haloform" reaction. When a methyl ketone is used as a substrate, what is it converted to in this reaction?
Calculate the volume of O2 at STP, required for the complete combustion of 175 g octane (C8H18) to CO2 and H2O?
An 11.0 gram sample of CO2 exerts a pressure of 50.0kPa. What mass of CH4 must be added to the CO2 in order to increase the pressure of 75.0 kPa? Assume no CO2 escapes.
show the calculation for the percent yield of K3[Fe(C2O4)3].3H2O using your actual yield and the theoretical yield
calculate pH at points between the start of titration and equvalence point: choose points so tht they will be more dense where change in pH is faster
How many Pb atoms would be present in a 0.500 L sample of this air (the approximate lung capacity of a human adult)?
Complete the following equation that illustrates a Brønsted-Lowry acid/base reaction. Phases are optional.
How many grams of formic acid, HCOOH, must be added to 0.300 L of 0.190 M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.00? Assume no volume change. Ka of HCOOH = 5.0 10-4.
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