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At 25 C and 1.0 atm pressure, what is the minimum quantity of dry air needed to combust 1.1 L of CH4 (g) completely to CO2(g)? Remember that oxygen is present in the atmosphere to the extent of 209480 parts per million.
determine what is the percent yield of the reaction if 15.0 grams of nitrogen and 2.00 grams hydrogen react to produce
hydrogen gas is generated when calcium reacts with water. the volume of gas collected over water at 30 degree celcius and pressure of 988 mm Hg is 641 ml. what is the mass in grams of the hydrogen gas obtained? the pressure of water vapor at 30 de..
A sample of Hydrogen gas was collected over water at 21 degrees C and at a pressure equal to the atmospheric pressure of 748 mmHg. The volume of the sample was 512 ml. How many grams of the H2 are in the sample. The vapor pressure of water at 21 d..
The following data were obtained when a Ca2+ ion-selective electrode was immersed standard solutions whose ionic strength was constant at 2.0 M.
Direct reaction of sodium metal with O2(g) leads to sodium peroxide, Na2O2, which contains a peroxide complex anion and is diamagnetic. Direct reaction of potassium metal with O2(g) leads to potassium superoxide, KO2, which contains a superoxide c..
When synthesizing aspirin in the lab, what is the purpose of the sulfuric acid in the mixture. ((Mixed 2g salicylic acid, 5mL acetic anhydride, 5 drops concentrated sulfuric acid, added distilled water after heating)).
the dipole moment of CD^3F is 1.858 D, which is more electronegative, hydrogen or deuterium?
a compound is 40.0 6.70 and 53.3 by mass. assume that we have a 100.- sample of this compound.the molecular formula
The density of water vapor at 327.6atm and 776.4K is 133.2gm/dm^3. determine the molar volume Vm of water and the compression factor Z from these data
A particular coal contains 2.92% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide gas then reacts with calcium oxide to form solid calcium sulfite
What is the concentration (in M) of the chloride ion when 18.2 mL of a 0.503 M solution of sodium chloride is combined with 18.9 mL of a 0.504 M solution of iron(III) chloride? Assume the volumes are additive.
Calculate ?G°rx (in kJ) at 582.77 K for this reaction. Report your answer to two decimal places in standard notation (i.e. 123.45 kJ).
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