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For each alkene, indicate the direction of the dipole moment. For each pair, determine which compound has the larger dipole moment.
a) cis-1,2-difluoroethene and trans-1,2-difluorothene
b) cis-1,2-dibromoethene and trans-1,2-dibromoethene
c) cis-1,2-dibromo-1,2-dichloroethene and cis-1,2-dichloroethene
What is the percentage yield of SO3 if 22.3 g SO3 are obtained from the reaction of 25.0 g SO2 with an excess of O2.
Sorbic acid, C5H7COOH, is a weak monoprotic acid with Ka = 1.7 x 10-5. Calculate the pH of a solution containing 11.25 g of potassium sorbate in 1.75 L of solution.
How much 0.230M KOH is required to completely neutralize 55.0mL of 0.220M HClO4
Determine how much heat (in kJ) is needed to warm 12.0g of ice, that is initially at -10.0 ° C, to steam at 114.0 ° C? The heat capacity of ice is 2.09 J/g⋅ ° C and that of steam is 2.01 J/g⋅ ° C.
What is the concentration of free Ni2+ ions in a saturated Ni(OH)2 solution if the pH is buffered to remain at 8.4? The Ksp of Ni(OH)2 is 6.0 x 10^-16.
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
Calculate the pH at the equivalence point in titrating 0.100 M solution of sodium hydrogen chromate (NaHCrO_4 )with .080 M NaOH.
Consider a sample of helium gas at 28 C with a volume of 3.80 L at a pressure of 3.15 atm. The gas expands to a volume of 9.50 L and the gas is heated to 43 C
If 500ml of a solution containing 1.00g of barium nitrate (199.33 g/mol) is combined with 500 ml of a soluiton containing 1.00g of sodium sulfate
When the following equation is balanced using the smallest possible integers, what is the number in front of the underlined substance?
what is the ppm of hardness for the 0.00100 M CaCl2 solution?
A gas is compressed from an initial volume of 5.60 to a final volume of 1.23 by an external pressure of 1.00 . During the compression the gas releases 123 of heat. What is the change in internal energy of the gas?
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