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Problem- A student prepares aspirin and finds her yield is greater than 100%. Assuming all her weighing and other measurements were correct what would cause this to happen?
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how many molecules of oxygen gas are needed to react with 4.2 moles of C3H8O?
Calculate the de Broglie wavelength, in nm, of a baseball of 5.25 ounces with a speed of 97.0 mph
Draw a six carbon alkyne that can exist as diastereomers. The molecule should only contain only carbon
If 12.0 g naphthalene (C10H8) is dissolved in 119.4 g chloroform, what is the molality of the solution
Mixed in a constant-pressure calorimeter, the temperature of the mixture rose from 21.15 to 26.00. If the density of the solution is 1.0g/mL and its specific heat is 4.18J/g C, how much heat is evolved by this reaction in kJ
For a particular reaction, Delta H = -30kJ and Delta S = -92J/K . Assume that Delta H and Delta S do not vary with temperature. Part A. At what temperature will the reaction have Delta G = 0
constant- pressure calorimeter containing 80 g of water at 24.3 C. the final temperature of the system was found to be 28.8 C. Calculate the amount of heat that flowed into the water.
Compound A, , was found to be optically active. On catalytic reduction over a palladium catalyst, 2 equivalents of hydrogen were absorbed to yield compound B. Ozonolysis of A gave two compounds. One was identified as acetaldehyde
Regard as the first order decomposition of A with an initial concentration of 2.3 M. If k= 7.3 x 10-4 s-1, Explain what is the concentration of A after 1.2 x 103 seconds?
Explain the temperature of the stratosphere is -23.0ºC as well as the pressure due to the zone is 1.4 x10-7 atm. Compute the number of ozone molecules present in 1.00 m3 (1L = 10-3 m3) in the stratosphere.
The IR spectrum of HCN shows three absorption bands at 3312 cm-1, 2089cm-1, and 712 cm-1. Assuming HCN is linear, assign vibrations to the three absorption bands
1. can the terms lsquomass and lsquoweight be used interchangeably - explain.2. complete the following questions about
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