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What are the three possible nuclear arrangements of N2O. Which one allows for a "good" Lewis structure. This isnt the one nature prefers. Which of the two "imperfect" arrangments is superior? This nuclear arrangment has three possible electronic arrangements...one has more than 8 electrons for a second row atom, the remaining two have complete octets, but two atoms with formal charges of magnitude 1. Which is correct and why ( hint electronegativity).
The latent heat of fusion for sodium is 2.6kJ/mol. How much heat is needed to melt 46g of sodium at its melting point of 98 degree Celcius?
Calculate a new concentration of buffer with the pH of 4.91 for 3.907mL of 1.0 M acetic Acid and 6.093mL of 1.0 M Sodium acetate and 90mL water with an addition of 2.90mL of 1.00 M NaOH is added.
Above what Fe2+ concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 9.99? The Ksp of Fe(OH)2
Derive an expression for the number of molecules with a speed (c) greater than some specified speed (c'). Recall that the number of molecules having speed in a certain range is the integral under the Maxwell-Boltzmann speed distribution curve ..
Write a net ionic equation for the reaction that occurs when excess hydrobromic acid (aq) and iron(II) sulfide (s) are combined. Include states
Calculate w (in kJ) when 390 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 426 K.
If I have hydrogen peroxide, molecular weight(g/mol) is 34.02, its density (g/ml) is 1.2, its concentration is 50% by weight and I have 2mL of it how many mols would I have
What mass of silver chloride would be formed from mixing 250 mL of 0.240 M MgCl2 solution with 200 mL of 0.380 M AgNO3 solution? AgCl FWT = 143.32 g/mol
evaluate its purity and to determine whether it might be identical to a given sample of an illegal drug, a white crystalline solid. Clearly explain what you would do, why you would do it, and how you interpret your results
The delta G inital for the dissociation of an aqueous solution of a weak acid at 25 degrees celcius is 14.8 kJ. What is the calue of Ka for the acid?
you wash dishes for a chemistry laboratory to make extra money for laundry. You earn 6 dollars/hour, and each shift lasts 75 minutes. Your laundry requires 6 quarters/load.
Draw the structure of the organic product that is formed when 3-methylcyclopentanol is treated with the following reagents: 1) TsCl, pyridine; 2) NaCN.
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