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Allene, H2C--C--CH2, is somewhat unusual in that it has two adjacent double bonds. Draw a picture showing the orbitals involved in the sigma and pi bonds of Allene. Is the central carbon atom sp2- or sp-hybridization? What about the hybridization of the terminal carbons? What shape do you predict for allene?
the mechanism involved in the distillation of a mixture containing acetone and ethanol
A 0.100g of plant food was reacted and 0.963g of MgNH4PO4*6H2O was recovered. What is the mass% of P in the original sample?
which portion of the titration curve are you in to reach pH = 7? Show your calculations to prove that dilution of 10,000 gal aniline requires 0.58 gal of this acid.
Calculate the pH of the solution that results when 0.55 g of KHP is dissolved in enough water to produce 25.0 ml of solution.
When 37.6 ml had been added the solution turned red .How many milligrams of I- were present in the original solution?
Using given data, calculate the change in Gibbs free energy for each of the following reactions. In each case indicate whether the reaction is spontaneous at 298 K
Meaning, use and calculation of empirical formulas, In this introduction are given the explanation of how to find out an empirical formula if one has found out the chemical elements of an unknown substance and measured their ratio of masses
A 4.40 g piece of solid CO2( dry ice) is allowed to vaporize(change to gas) in a ballon. The final volume of balloon is 1.00 L at 300L. What is the pressure of the gas?
A sample of C3H8 Has 3.84X10^24 H atoms. a) how many carbons does the sample contain b) calculate the total mass of the sample
the rate of the constants for the above gas pharse reaction is 1.438M^-2 s^-1 at exactly 642.5 Kelvin and 21.64 M^-1 s^-1 at exactly 838.1 Kelvin. What is the value of the activation energy of the reaction in KJ/mole?
if a raindrop weighs 65 mg on average and 5.1x10^5 raindrops fall on a lawn every minute what mass in kg of rain falls in 1.5 hours
an Erienmeyer flask is closed by a stopper connected to a glass tube. the glass tube is sealed by a drop of mercury. if we move the whole appareatus in the diagram from a room with a temp. of of 26 degrees celcius to an outdoor yard with a temp of..
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