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Toofley the Chemists own 29 pharmacies. The numbers of packets of a new skin medication sold in each of their shops in a week were:
(a) Find the mode and range of these data.
(b) Identify the median of the data.
(c) Find the lower and upper quartiles.
(d) Determine the semi-interquartile range.
Calculate the relative change in the rate coefficient for the reaction at the Earth's surface (T = 295 K) and at the top of the troposphere (T = 220 K). The reaction has an activation energy of 19.5 kJ/mol.
If expansion is isentropic, what is the minimum pressure that can be reached in such a nozzle and what is the cross-sectional area at the nozzle throat at this pressure for a flow rate of 0.75 kg s-1?
refer attachment for assignmentnbspattachment-nbspassignmentfile.docxquestion 1 blending is an important unit operation
What is the confidence interval for the true mean for a probability level of 0.95 and 0.99? How much could the confidence range be improved if the number of analyses were doubled assuming the original distribution remained unchanged?
CHE 352 – Spring 2014, In this assignment, students will review some of the concepts of measurements discussed, 4 methods of measuring temperature, 4 methods of measuring fluid pressure
Two moles of benzene are mixed with 3 moles of acetonitrile under constant temperature and pressure at 45 °C and 33 kPa. What is the phase of the mixture (vapor, liquid, or mixed)?
a. Develop a general equation that relates the average value of n to the mass of a given mixture of PCBs and the mass of AgCl produced. b. A 0.1947-g sample of a commercial PCB yielded 0.4791 g of AgCl. What is the average value of n for this samp..
what would be the temperature and pressure of the resulting air stream? Assume air to be an ideal gas for which Cp = (7/2)R.
Nitrogen is compressed adiabatically in a closed system from initial pressure P1 = 1 bar, T1 = 5 °C to P2 = 5 bar. Due to irreversibilities there is an entropy generation equal to 4.5 J/mol K. Calculate the temperature at the end of the comp..
Draw a diagram to show realistic links between the by-products from sugar and rice mills and the intended products of the biorefinery.
If you had an extremely magnified view of the solution (to the atomic-molecular level), list the species you would see (include charges, if any).
Commercial cold packs and hot packs are available for treating athletic injuries. Both types contain a pouch of water and a dry chemical. When the pack is struck, the pouch of water breaks, dissolving the chemical, and the solution becomes either ..
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