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2B5H9+ 12O2-----> 5B2O3+ 9H20
How many moles of B2O3 can theoretically be obtained from 4 moles of B5H9 and excess O2?
How much B5H9 must be reacted with O2 to produce exactly 100 g of B2O3?
120 g of B5H9 and 200g of 02 are reacted. How much B2O3 will be produced?
150g of B2O3 were obtained. WHat is the percent yield in this reaction?
Write a molecular equation for the precipitation reaction (if any) that occurs when the following solution are mixed. How do you convert these over and please show steps.
The plot of In P vs. 1/T for a liquid produces a curve with slope -860k. what is the enthalpy of vaporization for the liquid
a calorimeter contains 27.0 grams of h2o at the temperature of 14.5 degree celsius. when 1.40 grams of a substance that
palladium crystallizes with a face-centered cubic structure. it has a density of 12.0 gcm3 a radius of 138 pm and a
Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 62°C?
Ice floats on water. For most other substances however, the solid sinks in the liquid. Classify each of these statements as true for water, or true for most other substances.
what will the concentration be after 3.00 minutes? B)A zero-order reaction has a constant rate of 3.40×10^?4 M/s . If after 80.0 seconds the concentration has dropped to 3.00×10^?2 M , what was the initial concentration?
The activation energy of a certain reaction is 46.7 kJ/mol. At 20 C, the rate constant is s^-1. At what temperature would this reaction go twice as fast
Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous
To determine the enthalpy change for this reaction, 0.158 g of Mg metal is combined with enough HCl to make 100.0 mL of solution in a coffee-cup calorimeter of negligible heat capacity.
Calculate the equilibrium concentration of HC2O4- in a 0.20 M solution of oxalic acid.
In acid based titration, 33.65mL of an 0.148 M M HCL solution were required to neutralize 25.00 mL of a NaOH solution . What is the molarity of the NaOH solution
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