Chemistry question and answers for September 26, 2023
- Q Foreach of the following complexes, give the oxidation state of themetal, its dn configuration, coordination number and most likelystructure (i.e. octahedral, tetrahedral, etc.):a) (5pts) [Co(H2O)6]2+b) (5pts) [Cu(en)2(H2O)2]2+c) (5pts) [Ni(CN)5]3–d) (5pts)...
- Q Octane, C8H18, a primary constituent ofgasoline, burns in air:C8H18(ℓ) + 12 1/2 O2(g) → 8CO2(g) + 9 H2O(ℓ)A 1.00-g sample of octane is burned in a constant volumecalorimeter. The calorimeter...
- Q You need to be able to get an answer of 2.14 x 10-7 Mfor part c.A lead ion-selective electrode measured a potential of-33.9 mV when immersed in 50.00 mL of...
- Q Complete and balance the following redox reaction in acidicsolutiona) ReO4- (aq) +IO- (aq) --> IO3- (aq) + Re(s)b) Pb^2+ (aq) + IO3- (aq) --> PbO2(s) + I2(s)c) IO3- (aq) +...
- Q I'm not understanding quite how to do this type of problem. Theproblem states: What is the enthalpy change produced by thereaction of 50.0 g Fe2O3 with 50.0 g Al according...
- Q 1. Three (03) students are planning to run Diels-Alder reactionsusing maleic anhydride as dienophile and three (03) differentdienes (A, B, and C). Student A will be using cyclopenta-1,3-diene(compound A), Student...
- Q 8- trace elements in the teeth of archeological specimentprovides anthropologists with clus about the dite and diseases ofancient people . Porter et al (20020 measured the trace elementsstrontium from extracted...
- Q How many colors are in the visible spectrum?
- Q 9. In the crystal structure of CsCl, the distance between Cs+and Cl is equal to 3.55 Ã… (0.355 nm). Calculate density of CsCl (ing/cm3 ).
- Q Which of the following represents the hydrolysis of the ammoniumion?NH3(aq) + H2O(l) ⇄NH4+(aq) +OH-(aq)NH3(aq) +H3O+(aq) ⇄NH4+(aq) +H2O(l)NH4+(aq) +OH-(aq) ⇄ NH3(aq) +H2O(l)NH4+(aq) +H2O(l) ⇄ NH3(aq) +H3O+(aq)
- Q 1. Calculate the mass ofKHC8H4O4 (molar mass =204.44g/mol) that reacts with 15mL of NaOH solution in part A.3.Express this mass of KHC8H4O4 tothe correct number of significant figures and record...
- Q 9) What is a common, high end, reinforcing material for polymercomposites used in aircraft?Please explain in clear words. Thanks
- Q Balance equationOsO4(aq) + S3(s) → HSO4–(aq) + Os(s)
- Q In regards to reactivity with sodium metal please confirm mystatement that:***\"Primary alcohols react faster/most with Sodium metals, andtertiary alcohols react the slowest\". ***1. Methyl alcohol will react FASTER with sodium...
- Q Provide a chemical definitation of the following:1- Equilibrium Constant2- Le Chatelier princeiple.3- Dynamic equilibrium
- Q The work function of palladium is 5.22 eVeV.part A:What is the minimum frequency of light required to observe thephotoelectric effect on PdPd? Express your answer with theappropriate units. Answer: 1.26×1015s−1please...
- Q 2.To fully denitrify 1000 gallons of water with a nitrate-Nconcentration of 17 mg N l-1 ...a) how many grams of glucose would it take?b) how many moles of methanol would...
- Q calculate the amount of heat released by the burning methanol injoules
- Q Charlotte P. Gilman's \"The Yellow Wallpaper.\"In \"The Yellow Wallpaper\" what does the woman behind thewallpaper represent? And why does the narrator come to identifywith her?
- Q The Kf for the formation ofCo(NH3)62+ is 7.70 ×104.The Kf for the formation ofCo(en)32+ is 8.70 × 1013.Suppose a 500.0 mL solution contains 1.000 millimoles ofCo(NO3)2, 200.0 millimoles of NH3,and...
- Q A liquid containing 60 mol% toluene (Tb = 110 °C) and 40 mol%benzene (Tb = 80 °C) is continuously distilled in asingle-equilibrium-stage unit at atmospheric pressure. Whatpercentage of benzene in...
- Q Balanced Equation:2C8H18 + 25O2 --> 16CO2 + 18H201, If 4 moles of octane, C8H18, were burned how many moles ofoxygen were also used?a. 30 molesb. 38 molesc 50 molesd 25...
- Q True/False?Part 1.The rate law for the elementary reaction A + B → productsmight not be R = k[A][B].Part 2. If we know the mechanism of a reaction including thevalues of...
- Q How do you calculate the molar fraction of glucoseC6H12O6 in a solution of water ifthe vapor pressure of water is 700mmHg in 100 degree celsius?
- Q Codeine, a weak base that is an ingredient in many cough syrups, isknown to have addictive properties. People are now asked foridentification when purchasing cough medicine containing codeine.What is the...
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