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The rate equation for the decomposition of N2O5 is rate=[N2O5]. The value of k is 6.7E-5 seconds for the reaction at a particular temperature.
(a) Calculate the half-life of N2O5.
(b) How long does it take for the concentration to drop one tenth of its original value?
Classify each of the following reactions into one of the four general categories: combination, deomposition, single displacement, or double displacement. a. H2SO4(aq) + 2 KOH(aq) --> K2SO4(aq) + 2 H2O(l)
Decide whether or not a reaction will occur when a solution of Cadmium(II) Chloride is treated with nitric acid HNO3(aq). Write a balanced equation for any reaction that occurs.
how many moles of copper nitrate are present in 5 ml of 1.20 M copper nitrate? how do you arrive at that answer?
Constant pressure molar heat capacity of a compound is found to vary with temp, according to molar cp= 15.25 +.138* T--2.21*10^4/T^2 Calculate the enthalpy change when 1 mole of this compound
A sample of gas occupies a volume of 50.4 mL. As it expands, it does 125.5 J of work on its surroundings at a constant pressure
What is the most common oxidation state of the chalcogens compared to the halogens? What is an explanation for the difference?
The titration required 20.34 mL of 0.0491 M thiosulfate solution. Calculate the weight percent of ascorbic acid in a tablet of Vitamin C.
The initial temperature is 298k. The diameter of the cylinder is 0.5m. and the piston height is 1m. a. what is the mass of the weights on the cylinder
2N2H4 (aq) + H2SO4 (aq)--> 2 N2H5+So4^-2(aq) how many grams of hydrazine can be consumed by 250.ml of 0.225 M H2SO4?
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated? Co(NO3)2 +K2S ---> CoS + 2KNO3
Draw the structures of 4 amines with formula C3H9N. Draw the structures of all monoiodo derivatives of 3-methylpentane, C6H13I, which have the iodine on a tertiary carbon.
The molecular formula for lactic acid is C3H6O3, and its structural formula is CH3CH(OH)COOH. Is this molecule a carbohydrate. Explain.
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