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Infer the structure of compound Z (C11H12O4) which has UV-Visible absorptions above 275 nm. Its spectrum shows bands at 3208, 3175, 3100, 2947, 2908, 2847, 2753, 1740, 1730, 1650, 1634, 1590, 1565, 1476, 1455, 1230, and 1105 cm-1. Its 1H-NMR spectrum shows 1.2(d,6H), 3.8(m,1H), 7.3-7.8(ABq,4H), 10.7(s, 1H).
Calculate the mass of the reaction mixture in the calorimeter. (To do this, assume that the density of the HCl solution originally in the calorimeter can be approximated with the density of water (1.0 g/mL).
A mixture of ammonia and oxygen is prepared by combining 0.260 L of NH3 (measured at 0.700 atm and 21°C) with 0.170 L of O2 (measured at 0.740 atm and 49°C). How many milliliters of N2 (measured at 0.740 atm and 100. °C) could be formed if the fol..
Describe the type of bonding that your unknown has (covalent, polar covalent). Locate and show any dipoles in your compound
how much heat in is evolved in converting 1.00 of steam at 155.0 to ice at -55.0? the heat capacity of steam is 2.01
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.
a. it is stated that little or no dinitration is observed in the nitration of methyl benzoate. however if the reaction
The calibration points for the Martian temperature scale are the usual melting point of ice and boiling point of water, which are assigned the values 0 °M and 80 °M. the normal body temperature of humans is 98.6 °F. What is this temperature in °M?
Determine the combustion reaction between 30.0 of liquid methanol as well as 15.0 of oxygen gas measured at STP. The products of the reaction are CO2 and H2O. Compute the number of moles of H2O formed if the reaction goes to completion
How much heat in kilojoules is needed to bring 1.30 kg of water from 33.7 to 97.1 °C (comparable to making four cups of coffee)?
What is the identity of the atom A When a solution containing .634 grams of ACl 3 was permitted to combine with an excess of aqueous silver nitrate AgNO 3
A 100.00 mL of a 0.100M solution of Fe2+ in 1.000 M H2SO4 is titrated with a solution of 0.0200M of KMnO4 -. Calculate (a) the volume at equivalence (Vequiv), and the potential vs. a Ag/AgCl reference electrode
A formate buffer (pka = 3.75) is prepared by mixing 50 mL of a 4 M formic acid and 2 g of solid sodium hydroxide (MW= 40g/mol) in total volume of 1.0 L. A peptide with the amino acid sequence C-P=T-Y-R-L-D-Q (MW = 995.12 g/mol) is dissolved in thi..
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