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Calculate the change in total internal energy for a system that releases 2.15×104kJ of heat and does 6.04×104kJ of work on the surroundings. Enter your answer in scientific notation.
Δ U=× 10kJ
carbon dioxide was allowed to effuse through a small opening under constant pressure conditions. It required 683 s for 1.00 L of this gas to effuse. Calculate the effusion time of ozone (O3) under identical experimental conditions
Examine the chemical reactions that take place when a biological catalyst combines with a reactant substrate to form an unstable intermediate.
Researchers in the Antarctic measure the temperature to be 40°F. What is this temperature on (a) the Celsius scale and (b) the Kelvin scale?
If only 17 percent of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
What product would you expect to make? Propose a detailed reaction mechanism for this reaction. What by-product(s) might be expected in this experiment?
A Nylon 4-6 polymer with an average molecular weight of 10,000g/mol is reffered to as Nylon 4-6 (10,000). If one repeat unit of Nylon 4-6(10,000). If one repeat unit of Nylon 4-6 has a molecular weight of 198.26 g/mol, how many repeat units are pr..
a high school girl was getting ready for a big date but discovered with horror that her silver necklace was tarnished.
The tosylate of (2S,3R)-4-methyl-3-phenylpentan-2-ol undergoes an E2 elimination on treatment with sodium ethoxide. Draw the structure of the alkene that is produced.
Stearic acid has a freezing point of 71.20 C and a Kf of 4.890C/m. A 400.0 g quantity of stearic acid to which 50.0 g of an unknown is added has a freezing point of 68.00C. Calculate the molar mass of the unknown.
two moles of butane were completely burned in a pure oxygen atmosphere. how many ml of water was generated in this
A racquetball court is 20 ft wide. If we consider only motion along this direction and treat the ball as a particle in a box, if the ball weighs 1.4 ounces, what quantum number corresponds to a racquetball hit 100 km per hour and what speed would ..
Describe how the atomic emission spectrum of hydrogen has developed our understanding of the electronic structure of the hydrogen atom.
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