Charcoal samples from Stonehenge in England were burned in O2, and the resultant CO2 gas bubbled into a solution of Ca(OH)2 (limewater), resulting in the precipitation of CaCO3. The CaCO3 was removed by filtration and dried. A 788-mg sample of the CaCO3 had a radioactivity of due to carbon-14. By comparison, living organisms undergo 15.3 disintegrations per minute per gram of carbon. Using the half-life of carbon-14, 5715 yr, calculate the age of the charcoal sample.
Course Syllabus IS 101 Introduction to Information Systems. Spring 2017 First of all dear students, Are you insane You were probably thinking that you already “know computers”. Students who “know computers” know Face Book, Gaming, You Tube and probably use computers at work etc. Hmmmmm….. Is it possible to pass this class Last Spring many students did. But, many other students got lazy ( after all it is a 101 class – right ) and failed and wasted hundreds of dollars. Egad ! Drop the dam class now! Unless ……. You can spend a minimum of 4 -5 hours a week – MINIMUM. You can’t get behind. To pass this course you must pass all 3 international standardized IC3 exams with a photo ID here at the college or at a paid testing center. This is a university level course. Did you w