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Antimony pentafluoride (SbF5) is a member of a class of molecules called super acids. What is the predicted structure of the molecule?
If 60.0g of Cu metal at 85C were added to 60.0g ethanol at 10C in a calorimeter of heat capacity 30.0 J/K what would the final temperature be assuming no heat losses? cp for Cu= 0.380 J/K/g and Cp for ethanol = 60.0 J/K/mol
an An automobile gasoline tank holds 42 kg of gasoline. When the gasoline burns , 168 kg of oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced
How many joules of energy are absorbed by the silver? How many joules of energy are absorbed by the water?
a spherodial bacterium with diameter of 1 um contains twomolecules of a particular protein. what is the molar
he uses the combustion of natural gas which is exothermic to heat the water how much natural gas will he need to burn?
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
Determine the volume of H2S (at 375 K and 1.20 atm) needed to produce 55.0 g of S. Assume that there is excess SO2 present. 2 H2S(g) + SO2(g) ? 3 S(s) + 2 H2O(g)
From a consideration of the Lewis structure of the thiocyanate ion, SCN- in which carbon has double bond with both the sulfur and nitrogen atoms, what are the formal charges on the sulfur, carbon, and nitrogen atoms respectively
under water where the temperature is 17c and the pressure is 394 kpa a diver inhales 2.1 l of air from his scuba
What is Kd of a substance X if 25 ml of a 0.015 M aqueous solution of X is extracted with 10.0 ml of ether. The entire 25 ml of water (aqueous solution) is titrated and it is found that the concentration of X after extraction is 0.005 M. The molar..
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal.
A test solution contained 2 mL of 0.10 M Ag+. A silver strip was dipped into the test solution, and a cell potential of 0.0592 V was measured against an Ag/Ag+(1.0M) reference half-cell.
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