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The molar heat of fusion of water is 6.01 kj/mol. How much heat energy is required to melt one ice cube in a soft drink to form liquid water a 0 degree celcius, if the ice cube has a mass of 18.9 g?
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
calculate the unknown concentration for the analyte noted as (xM) from the potential data given at 25 oC Pt/Fe 2+ (0.05 M)//Ag+ (xM) /Ag.
A gas is collected over water at a certain temperature. The total pressure is 762 torr. The vapor pressure of water at this temperature is 17 torr.
How many independent linear combinations are possible for four 1s orbitals? (b) Draw pictures of the linear combinations of H1s orbitals for a hypothetical linear H4 molecule
The solubility of CaSO4 in pure water at 0oC is 1.13 gram(s) per liter. What is the value of the solubility product.
3NaHCO3 + H3C6H5O7= 3CO2 + 3H2O + Na3C6H5O7 1g of sodium bicarbonate and 1g citric acid are allowed to react. Find the limiting reagent.
How much of a 6.0 M sucrose solution should be used to make 79.0 mL of a 0.055 M solution.
a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL.
how many moles are there of the reducing agent. What is the molarity of the reducing agent? Oxidizing agent --> KMnO4 Reducing Agent --> Fe +2 Volume of Fe +2 = 25 mL Concentration of KMnO4 = 0.1290 M
At 25 c and 1.0 atm, 0.25 g of a gas dissolves in 1.00 L of water. What mass of the gas dissolves in 1.00 L of water at 25 c and 3.0 atm?
How many grams of diphenyl (C 12H10) must be dissolved in 655 g of benzene to lower the freezing point by 3 .20ºC.
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