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In a constant pressure calorimetry experiment, a reaction gives off 20.8 kJ of heat. The calorimeter contains 150 g of water, initially at 23.4 oC.
What is the final temperature of the water? The heat capacity of the calorimeter is negligibly small.
Penicillase is an enzyme secreted by bacteria to inactivate the antibiotic penicillin. The enzyme has a molar mass of 30,000 and a single active site. The catalytic rate constant is 2000 s-1 and the Michaelis constant is KM = 5 x 10-5 M.
A 11.6-g sample of CaCl2 is dissolved in 139 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
propes a mechanism that shows why P-chlorotoluene reacts with sodium amide in liquid NH3 At -33C to give a 1:1 mixture of P-toluidine and m-toluidine
A fossil is found to have a 14C level of 75.0% compared to living organisms. How old is the fossil
a protein subunit from an enzyme is part of a research study andneeds to be characterized. a total of 0.160 g of this
Menthol is a crystalline substance with a peppermint taste and odor. When 1.65 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 8.78 °C. The freezing point and Kf constant for cyclohexane can ..
An additional 31.4 g of water was added to the reaction vessel, and a new state of equilibrium was achieved. What are the equilibrium partial pressures of each gas in the mixture
What is the expected theoretical yeild of aspirin based on exactly 1 g of salicylic acid and 3.50 mL of Acetic Anhydride (Density = 1.082 mL^-1)
How many moles of water are mixed with 1 mole of KAl(SO4)2 if 2.16 g of water are lost when 4.74g of the mixture are there to begin with
Write any assumptions you make. Calculate the total work of this expansion. If this expansion were reversible, what would the value be?
Consider the decomposition of calcium carbonate. Assume that ?H° = 177.8 kJ/mol and ?S° = 160.5 J/K·mol for the temperature range. CaCO3(s) -> CaO(s) + CO2(g)
Lidocaine is thought to bind to receptors in its methylated form. identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding (1 example)
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