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A weight lifter holds 900 N (about 200 lb) over his head. Is he doing work on the weights? Did he do any work on the weights? Explain. In general terms, how is energy defined?
The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are
Which of the following aqueous solutions has the highest boiling point. Kb for water is 0.52 degrees C/m.
The pressure of a gas sample varies inversely with the volume. ----E) All gas samples of the same volume at STP contain the same number of molecules.
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
ow many stereo-isomers would there be if a molecule had four chiral centres, Rank the different carbocations in order of their stability.
Question- a) Write a spontaneous redox reaction in acidic conditions using the following two reduction potentials-
Question- Calculate the mass of protein that must be dissolved in 40 mL of water to obtain a concentration of .00041 M.
Saturated Calomel Electrode || Titration Solution | Ag (s) Calomel Electrode: E=0.241V For Ag+ + e- ---> Ag(s), E0 = 0.79993 V. AgI is Ksp = 8.3 × 10-17. What it the volts at equivalence point when Ve=30.00mL
Compute deltaS values for the subsequent reactions by utilizing tabulated So values from Appendix C. (a) Cl2(g) + H2(g) 2 HCl(g) So deltaS = J/K (b) Be(OH)2(s) BeO(s) + H2O(g) So deltaS = J/K (c) SO2(g) + 1/2 O2(g) SO3(g) So deltaS = J/K (d) NH3(g..
A volume of 80.0mL of H2O is initially at room temperature (22.0) Celcius. A chilled steel rod at 2.00 is placed in the water. If the final temperature of the system is 21.1 Celcius, what is the mass of the steel bar
5-hydroxypental gives a sixmemebered ring hemiacetal. Write a mechanism for the formation of the hemiacetal catalyzed by sulfuric acid.
The reaction of Zn and Cu2+ produces a brown solid product. Explain what the identity of this product is. Give a balanced equation that shows the formation of this brown product
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