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Question: What mass of P4(s) is required to completely consume 25L of H2(g) at 27 degrees Celcius and 0.976 atm in the presence of excess oxygen. Molar mass of P4 given at 123.88 g/mol. Molar mass of H2 given 2.02 g/mol.
P4(s) + 6H2(g) + 8O2(g) -> 4H3PO4(s)
Suppose that an enzyme has the capacity to convert substrate A (Km = 1 x 10-3 M) to a product P1. Suppose the same enzyme can also convert another substrate B (Km = 1 x 10-6 M) to a different product, P2.
Calculate the pH of this solution. When 0.20 mol of H+ ions is added to the solution what is the pH (assuming volume change is negligible)
The wind speed is 4.8 m/s on a slightly sunny morning and plume rise is 20 m. (a) Calculate the ground-level centerline concentration 2.0 km downwind from the stack. (b) Calculate the concentration at 100 m off the centerline at the same x distanc..
The scale of an image indicates that the length of the x-axis and the y-axis is each 4.00nm. Knowing this, determine the radius, in meters of asingle praticle of carbon.
Which group includes only exothermic processes? Cu(s) + H2SO4(aq) 11. In the reaction shown below, which substances are dissolved in water?
a 1.5282g antacid tablet contains 550. mg caco3. how many grams of the tablet should be used to provide 75.0 mg of
a sample of an element has a volume of 81 ml and a density of 1.73 gml. what is the mass in grams of the sample round
What is the relation between the standard deviation and the precision of a procedure. What is the relation between standard deviation and accuracy
Calculate the heats of combustion for the following reactions from the standard enthalpies of formations listed in appendix 3: (a) 2H2(g) + O2(g) = 2H2O(l) (b) 2C2H2(g) + 5O2(g) = 4CO2(g) + 2H2O(l)
1 ml of 0.1M aluminum nitrate, Al(NO3)3, is added to 1 ml of 6M ammonium hydroxide, NH4OH. What is the balanced net ionic equation
The following species, which is the best oxidizing agent and which is the best reducing agent
How far will the protein travel in one hour in an electrophoresis gel at 25C when a field of 1.0 V cm^-1 is applied if the viscosity of the gel is 0.891 cP
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