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When a 9.92-g sample of gaseous hydrogen bromide dissolves in 45.5 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 25.00 oC to 69.79 oC. Calculate H in kJ per mol of HBr for the solution process.HBr(g) H+(aq) + Br-(aq)
The specific heat of the solution is 4.184 J/g-K.
a) H = -69.6 kJ/mol.b) H = 3380 kJ/mol.c) H = 8530 kJ/mol.d) H = -84.7 kJ/mol.e) H = 84.7 kJ/mol.
A mixture of water and graphite is heated to 600 K. When the system comes to equilibrium it contains 0.13 mol of H2, 0.13 mol CO, 0.43 mol of H2O and some graphite
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The pH of a bicarbonate-carbonic acid buffer is 8.30. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
When 9.25 g of ClF3 was introduced into an empty 2.00 L container at 700.0 K, 19.8 % of the ClF3 decomposed to give an equilibrium mixture of ClF3, ClF, and F2.
What are the likely ground-state electron configurations of the following anions? Se2-, N-3
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