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Note the lewis structure H3O+. Highly electronegative atos often have a partial negative charge on them. negative formal charges, on the other hand, are not necessarily found on highly electronegative atoms. comment on the situation in this case. is the positive charge of hydronium ion on the least electronegativity atom? is this reasonable? is there a choice?
When 5.454 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 17.11 grams of CO2 and 7.006 grams of H2O were produced.
The results of the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick.
The polyyne molecules CkH2 with alternating triple and single carbon-carbon bonds represent potential nanowires for molecular electronics. They can be modelled as linear 1D-boxes with 2k
In the lab you make 10-5.5 M solutions of HCl and of NaOH using pure distilled deionized water. What would be the pH after the solutions equilibrate with the atmosphere
For the next three problems, consider 1.0 L of a solution which is 0.3 M HC2H3O2 and 0.2 M NaC2H3O2 (Ka for HC2H3O2 = 1.8 x 10-5). Assume 2 significant figures in all of the given concentrations so that you should calculate all of the following pH..
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group, and is a(n) alkane.
suppose that coal of density 1.5 gcm3 isnbsp pure carbon. it is in fact much more com-nbsp plicated but this is a
A sample of aspirin to be purified has a mass of 1.0g. Aspirin has a solubility of 1.0g in 30ml of water at 37Celcius and a solubilty if 0.10g per 30 ml at 25 Celsius. The sample is dissolved in 30 ml of hot water and cooled to 25 Celcius. How muc..
The Henry's Law constant for CH3Br gas in water at 25 oC is 0.159 mol/L-atm. Calculate the solubility of CH3Br in water at 25 oC in moles/L if the partial pressure of CH3Br in the headspace above a water sample is 1.71 atm.
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places.
What is the triple point of material X. Consider melting 3.00 moles of material X at 1.00 atm. Assuming that the melting co-existence curve is a straight line, what is X's normal melting temperature
Anhydrite (CaSO4). Calculate the equivalent values for the bonds in anhydrite and comment on the differences between the two minerals.
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