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Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
At constant volume, the heat of combustion of a particular compound is -3973.0 kJ/mol. When 1.481 g of this compound (molar mass = 172.71 g/mol)
Compute the a)molarity of the solution, b)molality of the solution, c) mole fraction of Ammonia.
How much heat (in kJ ) is required to warm 12.0 grams of ice, initially at -12.0 Celsius, to steam at 112.0 Celsius? The heat capacity of ice is 2.09 J/g*Celsius and that of steam is 2.01 J/g*Celsius?
Explain why a 1m solution of the compound FeCl2 in water has a lower freezing temperature than a 1m solution of KCl in water and what is the empirical formula
A 47.0 mL sample of gas in a cylinder is warmed from 28 degrees Celsius to 91 degrees Celsius. What is the final temperature?
Element Z has two naturally occurring isotopes Z-79 ( 78.918 amu) and Z-81 (80.916 amu) . Calculate the atomic mass of element Z given the abundance of the Z-81 is 49.31 %
Consider the reaction: 2 K(s) + 2 H2O(l) -> 2 KOH(aq) + H2(g), DH = ? The heat released when 24.9g of K reacts with excess water is 124 kJ. Determine the enthalpy change, DH, for the above equation as written
How much heat is required to warm 213 g of ice from -46.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
You have a solution of sodium nitrate containing 140g at 65 degrees Celsius. Is the solution saturated, unsaturated, or supersaturated.
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
Quantum number representations - What are the possible values of the four quantum numbers for one electron in a 5d orbital?
A Chem 113 TA prepares a solution by dissolving 3.11 g of solid KOH in enough water to make 100.0 mL of solution. Calculate the molarity of K+ ions in this solution.
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