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The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s). a. What mass of Na2 38SO4 has an activity of 10.0 mCi? Sulfur- 38 has an atomic mass of 38.0 and a half-life of 2.87 h. b. How long does it take for 99.99% of a sample of sulfur-38 to decay?
what are the implications of the future of fabrication for international trade transportation and
Write a function called int_col that has one input argument, a positive integer n that is greater than 1,and one output argument v that is a column vector of length n containing all the positive integers smaller than or equal to n, arranged in suc..
Describe the main purpose of the Globally Harmonised System of Classification and Labelling of Chemicals - Outline the bridging principles for classification of mixtures
Carry out a sensitivity analysis on the adipic acid project described in Example 9.5. Investigate the sensitivity of the 10-year NPV to variation in total fixed capital (-20% to +50%), annual gross profit (-20% to +30%), and project construction s..
Volume of Air Required for Combustion of a Natural Gas Mixture, A natural gas has the following analysis by volume:
Risk Analysis and Management: Earthquake - An example of Fragility and Load, The fully formated problem is with the solution.
A 100-liter fed-batch fermenter was successfully operated for 200 h using an aeration rate of 14 l/s and a 5 W agitator. It is proposed to scale the fermentation up to 10,000 liters. What agitator power consumption is required?
About 1000 kg of leaf is required to produce 1 kg of the drug. The extraction solvent (S) is a mixture containing 16.5 wt% ethanol (E) and the balance water (W). The following process is carried out to extract the drug and recover the solvent.
write a report on application of reverse osmosis principles for the desalination of sea water.the consumable water on
question 1a describe the main purpose of the globally harmonised system of classification and labelling of chemicalsb
question 1what are the two main types of industrial ventilation which are used to control airborne contaminants in a
consider the binary cycle using the sodium and steamwater in the sketch below and operating at conditions in table 1.
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