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An unknown volume of water at 18.2°C is added to 28.7 mL of water at 32.5°C. If the final temperature is 23.5°C, what was the unknown volume? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.)
At high temperature, hydrogen and carbon dioxide will reversibly react to form carbon monoxide and water vapor. At 986 C there are 0.11mol of each product and 0.087mol of each reagent in a 1.00L flask. What is Kc under these conditions
what is the enthalpy change per g mol of O2 between the liquid storage tank and the state of which the O2 enters the fuel cell
Ionizable protons are in rapid equilibrium and so you can think of an amino acid having a relative charge between 0 and 1. Plot the relative charge of glutamate as a function of pH
What quantity of heat is required to melt 500. g of ice and heat the water to steam at 100. oC? What quantity of heat is required to melt 500. g of ice and heat the water to steam at 100. oC?
Draw the chemical structure of an aldohexopyranose and a ketohexofuranose.
Identify all the possible macrostate and the corresponding microstates in a system consisting of two communicating containers and four atoms
The lower flammability limit (LFL) for a gas is the minimum concentration of the gas, in air, below which there is too little fuel to support combustion; For propane, the LFL is 2.1 mol-%.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 5.90 MJ of energy (in the form of heat) if the temperature of the sodium is not increase by more than 10.0 degrees Celsius
which atom will have the largest atomic radius? Sb, Ba, or F?
Use VSEPR theory to predict the shape of each molecule: a) CF3; b) NCl3; c) SCl2; d) CS2; e) BFCl2.
A buffered solution is made by adding 50.0 g NH4Cl to 1.00 L of a 0.75 M solution of NH3. Calculate the pH of the final solution. (Assume no volume change.)
The rate constant for electron transfer between V 2+ (aq) and V 3+ (aq) is observed to depend on [H+]: k = a + b/[H+], where a and b are constants. Propose a mechanism and express a and b in terms of the rate constants in your mechanism.
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