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Identify each of the following energy exchanges as primarily heat or work and determine whether the sign of is positive or negative for the system. a. A rolling billiard ball collides with another billiard ball. The first billiard ball (defined as the system) stops rolling after the collision. b. A book is dropped to the floor (the book is the system). c. A father pushes his daughter on a swing (the daughter and the swing are the system
In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature.
Draw the two possible products of the reaction between benzaldehyde and ethylpropylketone. Do not draw the products of the double-condensation.
Is a 0.15M solution of potassium benzoate C6H5COO-K+ acidic, basic, or neutral? Calculate the pH. The Kb for benzoic acid is 1.5 X 10^-10.
Show your work in finding the partial pressure of the nitrogen gas, PN2. 2) Show your work in finding the mass of the nitrogen collected
Gold has a density of 19.3 g/cm3. How many pounds does a gold sphere weigh if it has a diameter of 5.20 inches?
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90. PKr Side Chain is 3.90 (COOH) How do i find the net charge?
According to Boyle's law, for a fixed quantity of gas at a given temperature, what quantity relating pressure and volume is constant
A sample that has the formula MgCl2.6H2O loses a portion of water when it is dried in an oven but undergoes no other changes. If the student started with 10.000 g of the compound, and ends with a residue that weighs 7.342 g whats the formula of th..
how much energy is liberated when 366 g of mercury (c=0.139j/g degrees celsius)cools from 77.0 C to 12.0 degrees celsius?
Draw the alcohol produced from the acid hydrolysis of butyl acetate
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold.
what would be the effect on your calculated concentration of NaOH, if, unbeknownst to you, someone left the KHP out and it absorbed water?
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