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Understanding oxidation state of following: Is it always a whole number? What is oxidation state of Fe in Fe3O4?
Q1: State the number of atoms of each element on the reactant and on the product sides of the following equations: a. CH4(g) + 2O2(g) àCO2(g) + 2H2O(g)b. 4P(s) + 5O2(g) à P4O10(s)
Calcium carbide (CaC2) reacts with water to form acetylene (C2H2) and Ca(OH)2. From the following enthalpy of reaction data, calculate Δf for CaC2(s)
Which aqueous solution will have the highest total number of moles of ions in the solution. The answer is 100mL 3M calcium nitrate. Why is it not 100mL 4M glucose (C6H12O6), 100mL 1M aluminum fluoride, or 100 mL 2M calcium sulfide. How do you calc..
Determine the mass of oxygen in a 9.7g sample ofAl(NO3)3. and Calculate the mass of each sample.1.88 mol xenon dichloride, 69.7 mmol SeO2 1.56 ×10-3mol H2O
What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the longest wavelength of light that can eject electrons from the metal is 238 nm? [Data: c = 3.00 x 108 m/s; h = 6.63 x 10-34 Js ]
If 20.0 dm3 of methane, CH4, react with 200.0 dm3 of air at STP, calculate the dm3 of carbon dioxide gas produced.
1.27 (singlet, 6H); 2.12 (triplet,2H) and 4.26 (triplet, 2H). Determine the structure of the product and draw complete mechanism to show how it is formed.
Calculate (a) the maximum non-expansion work, and (b) the maximum work that can be obtained from the freezing of supercooled water at -5 oC and 1.0 atm.
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
Why is the same volume of thiosulfate used in each reaction? What is the purpose of the thiosulfate? [You must explain the technical reasons for including the thiosulfate
What is the expected pH of this solution. Estimate the free carbonate ion concentration in this solution. Estimate the concentration of carbonic acid in solution.
A 247.7mg sample of an unknown substance was submitted for combustion analysis. The sample yielded 632.64 mg of Carbon dioxide and 259.04mg of water. 1) What is the empirical and molecular formular of this unknown substance
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