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Choose the selection which most accurately gives both the value of the angle numbered 21 and the value of the angle numbered 22 in the figure above. Choose the best possible (most specific) answer. Other answers will be graded wrong. For example, if an angle is somewhat greater than 109.5 degrees, an answer which says that it is somewhat less than 120 degrees, while somewhat correct, will be graded wrong. a) Angle 21 is very close to 90 degrees and angle 22 is very close to 180 degrees. b) Angle 21 is somewhat less than 109.5 degrees and angle 22 is somewhat more than 120 degrees. c) Angle 21 is somewhat less than 109.5 degrees and angle 22 is somewhat less than 120 degrees. d) Angle 21 is somewhat less than 109.5 degrees and angle 22 is very close to 180 degrees. e) Angle 21 is very close to 120 degrees and angle 22 is somewhat less than 120 degrees.
A certain dry mixture contains only three compounds: silver nitrate ( AgNO3), magnesium chloride (MgCl2), and barium nitrate Ba(NO3)2. When 1.253 g of the mixture was added to excess water, 0.114 g of a dry precipitate was recovered by filtration...
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
What is the final pressure in the bottle for a monatomic gas, for which CV,m = 3/2R, and a diatomic gas, for which CV,m = 5/2R?
Some of the cyclohexane solvent vaporized during the temperature versus time measurements. Will this loss of cyclohexane result in the freezing point of the solution being recorded as too high
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.230 M HClO(aq) with 0.230 M KOH(aq). The ionization constant for HClO can be found here.
An acidic aqueous solution of AlBr3 is in an electrolytic cell. What reactions take place at the anode and the cathode.
Calculate the final temperature of a mixture of 100.0 g of ice initially at -16.0 degrees C and 375.0 g of water initially at 90.0
Using activity coeffient, calculate the pH of a 0.001M HCl solution. If you add a 0.010M solution of NaCl to this solution, will the pH increase, decrease or remain the same
Can someone please show me the product, and the reaction by-product of the following reaction? Please make sure that the reaction is balanced. And draw the structure please
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-)+Fe(2+)---> Fe(3+)+Mn(2+) in acidic solution. What is the ration Fe(2+):MnO4(-) in the balanced equation
If the barometric pressure is 784 torr and the experiment is carried out at 25 oC, what is the pressure of the gas collected?
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
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