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An unknown carbohydrate compound has the empirical formula CH2O. A solution consisting of 0.515 g of the carbohydrate dissolved in 1.717 g of acetic acid freezes at 8.8°C. What is the molar mass of the carbohydrate? What is its molecular formula?
What is the minimum mass of oxygen, in grams, needed to burn 39.7 g C6H6O? Give your answer to three significant figures
A buffer solution is .200 M in HNO2 and .185 M in NaNO2. What is the pH of the buffer system after 50 ml of .100 HCl is added to 250 ml of the buffer solution?? Ka of HNO2 = 4.6*10^4. (please show all work)
A set of two gas bulbs, with volumes of 500 mL and 300 mL, are connected by a closed stopcock. The 500 mL bulb contains 450 torr of Ne gas, and the 300 mL bulb contains 150 torr of Cl2 gas
aloh3 3hcl ---gt alcl3 3h2odetermine the moles of acid neutralized if a tablet contains 0.200 mol
What is the balanced chemical equation for the rearrangement of benzopinacol to benzopinacolone using iodine and acetic acid?
How many moles (mol) are in 6.3 ml of a 0.25 M solution of NaOH. your answer must include units
If 2.50 g CuSO4 are dissolved in 8.0 x 10^2 mL of 0.25 M NH3, what are the concentrations of Cu2+, Cu(NH3)4^2+, and NH3 at equilibrium
What is it about the structures of poly(acetylene) and poly(p-phenylenevinylene), and not poly(1-butene), that allows these polymers to conduct electricity? Use discussions of hybridization, pie bonding, and resonance as the basis for your argumen..
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
Write a balanced equation and an expression for Ksp for the dissolution of the given ionic compound. Include states-of-matter. CaCO3 balanced equation: solubility expression
Which of the following statements for E2 reaction is/are correct? a) no rearrangement occurs b) the rate determining step is bimolecular c) the reaction is stepwise d) protic solvents are generally favored
In deoxyhemoglobin, Iron atom lies ~0.36 to 0.40 out of the plane of the heme group whereas in oxyhemoglobin it lies of the porphyrine plane. Give reason for this behavious. Talk in terms of coordination number, size and the oxidation state of the..
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