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Depict a Lewis structure for the most significant resonance form of each ion showing formal charges and oxidation numbers of the atoms (a)
AsO43- (b) ClO-2
Explain what are the oxidation numbers for As and O in ASO43-?
The quantum yield for CO production in the photolysis of gaseous acetone is unity for wavelengths between 250 and 320 nanometers. After 20 minutes of irradiation at 313 nm, 18.4 cm cubed of CO
Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than sample B. Compare the pressures. Compare the rms speeds. Compare the average kinetic energies.
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
A 4.60 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C? The specific heat of gold is 0.129 J/(g·°C).
Commercial concentrated nitric acid is 69.0 % by mass HNO3 and has a density of 1.42 g/mL. Calculate the molarity of concentrated nitric acid.
Describe how aquatic photosynthetic organisms can cause daily variations in dissolved oxygen levels, and may cause the in situ formation of colloids and how this leads to formation of limestone deposits in aquatic systems.
Cr2 O72- (aq) + Cu(s)→Cr3+ (aq) + Cu2+ Balance the equation in acidic solution and find out how much of a 0.850 M K2 Cr2 O7 solution is required to completely dissolve 5.25 g of Cu.
24-Determinethe empirical and molecular formulas of each of the following substances. a) Epinephrine (adrenaline), a hormone secreted into the bloodstream in times of danger or stress
Write a net ionic equation accounting for this. For the reaction in part a, write the equilibrium constant expression and calculate the equilibrium constant from a consideration of Kb and Kw.
What would you expect to see in a reaction between salicylic acid and ferric chloride, and why
State the methods by which a radiation oncologist can administer these therapies. Additionally, state four major differences between the two modes of treatment.
calculate G for following reaction: N2(g)+3H2(g)------>2NH3(g), Pn2=2.6 atm Ph2=5.9atm Pnh3=1.2atm
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