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Assuming that the flow through an open tubular column is being generated by pressure (ef. voltage), at what radial position is the velocity of an individual fluid element equal to the average velocity of the fluid? (r= r subscript c and 0<k<1)
At this temperature, calculate the number of moles of NO2(g) that must be added to 3.12 mol of SO2(g) in order to form 1.30 mol of SO3(g) at equilibrium.
An aqueous solution is 22.0% by mass ethanol, CH3CH2OH, and has a density of 0.966 g/mL. what is molality of ethanol
How many grams of ice at 0 degrees Celsius and 101.3 kpa can be melted with the addition of 0.400 kJ of heat.
In a particular biological reaction taking place in the body at 37°C, the change in enthalpy was --135 kJ mol--1 and the change in entropy was --136 J K--1 mol--1. (a) Calculate the change in Gibbs energy (b) Is the reaction spontaneous? (c) ..
The concentration of an enzyme within a cell is extremely low realtive to other material present, yet functions effectively in its metabolic rate. How can enzyme function and never seem to run out?
Consider an electrolysis cell that might be used to electroplate nickel onto other metal surfaces. Label the anode and the cathode
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
Using a sample of water with a mass of 46.0 grams at a temperature of -58. Degree Celsius calculates how many Joules of energy (E) are necessary to heat the ice to 0 degree Celsius. Specific heat of ice= 2.1 J/g C).
Maintenance of pH is vital to the cells of all living organisms because enzyme activity is influenced by pH. What is the intracellular pH range of most cells?
Iodine-131 is a radioactive isotope. After 7.00 days, 54.7% of a sample of 131I remains.
Interstellar space can be considered as having 10 molecules of hydrogen per cubic centimeter and an average temperature of 2.7 K.
Example: Recovery of the reduced solution yielded a sorbitol syrup with a pyridine number of 83. Please help thank you.
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