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Consider the possible sources of error described below. Briefly explain the effect of each on your calculated molar heats of neutralization. Indicate which items of data would be in error and the effect (too large, small, or no effect). a.) The calorimeter cup had several millimeters of water in it when you added the HCl in Step 16: b.) The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out of the calorimeter while pouring:
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
Electrochemistry and Solubility, The potential of the cell Bi|Bi2S3(s) |Bi2S3(aq)|Bi is 0.96 V at 25*C. Calculate the solubility of Bi2S3, Assume it is an ideal solution.
An automobile gasoline tank holds 49kg of gasoline. When the gasoline burns, 172kg of oxygen are consumed and carbon dioxide and water are produced.
Cobalt-60 is commonly used as a source of B-particles. How long does it take for 87.5% of a sample of cobalt-60 to decay, given that the half-life is 5.36 years?
How many grams of glucose (C6H12O6) must be dissolved in 563 gram of ethanol (C2H5OH) to prepare a 2.40 x 10-2 m solution?
A solution is prepared by adding 0.500 g of solid NaCl to 50.0 mL of 0.100 M {CaCl_2}. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.79 g of adrenaline in 33.5 g
A buffer solution containing 0.25 M Acetic acid and 0.56 m Sodium acetate. After addition of 0.0060 mol HCL what is Ph of buffer.
A gas weighing 33.62 g occupies a 10.00 liter flask at 27oc and 730 torr of pressure. what is the molar mass of the gas?
What will be the equilibrium concentration of [H2O] ? What will be the equilibrium concentration of [CO2]? What will be the equilibrium concentration of [H2]?
What is Kp for the reaction at this temperature? B. For the reaction N2(g)+ 3H2(g) 2NH3(g) Kp = 2.20×10?3 at 268 C . What is K for the reaction at this temperature?
What is the partial pressure of H2O in the compressed gas mixture? (See this table.) torr (b) What mass of water vapor condenses to liquid g
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