Relationship between Radioactivity of Si-32 and P-32: Cost to Produce P-32

If it costs $10,000 to generate 1 MCi of Si-32, what will be the annual cost to produce 1 MCi per week of P-32?

Find the apparent viscosity for each flow rate Q.

A capillary rheometer is used to measure viscosity. A pressure transducer records the pressure drop deltaP across the die, and the die capillary has a diameter of 2 mm. Experiments are carried out at three volume flow rates Q, for dies of three lengths l. The Table below gives values of deltaP in MPa measured for polypropylene at 190°C. Assuming Newtonian viscosity, find the apparent viscosity for each flow rate Q. Q=2*10-7 m3/s Q=4*10-7 m3/s Q=8*10-7 m3/s L=5 mm 1.502 2.100 2.935 L=10 mm 2.337 3.266 4.565 L=20 mm 4.006 5.599 7.826

Similarities and differences between Nanotechnology and Surface Phenomena

a. In what ways do nanotechnology and surface phenomena overlap? b. What is the relationship between and nanotechnology and surface phenomena? c. What are the differences between nanotechnology and surface phenomena?

Continious stirred tank reactor (CSTR): Volumetric Flow Calculation

Liquid phase reaction reversible: A + B = R + S k1 = 7l/mol*min k2 = 3l/mol*min It occurs in a continuous stirred tank reactor of 120liters. 2 streams, one with 2.8 mol of A/liter and the other 1.6 mol of B/liter, feed the reactor with the same volumetric flow. The goal is to have a 75% conversion of the limitant reactant. Calculate the volumetric flow of each components.

Activation Energy/Concentration

5. The rate constant nearly doubles for some reactions when there is an increase in temperature from 17ºC to 32ºC. Calculate the activation energy. 11. In a certain tap-water sample, [H^+] = 4.6 X 10^-7 M. What is the concentration of OH^-? 15. When 50mL of 1.000 M HCl is titrated with 1.000 M NaOH, the pH increases. What is the pH of the solution after 49.99 mL of 1.000 M NaOH has been added?