Answers: 3
Chemistry, 22.06.2019 08:00
What are the similarities of physical and chemical change ?
Answers: 1
Chemistry, 23.06.2019 11:20
The chemical composition of soil varies with depth. an article in communications in soil science and plant analysis describes chemical analyses of soil taken from a farm in western australia. fifty specimens were each taken at depths 50 and 250 cm. at a depth of 50 cm, the average no3 concentration (in mg/l) was 88.5 with a standard deviation of 49.4. at a depth of 250 cm, the average concentration was 110.6 with a standard deviation of 51.5. find a 95% confidence interval for the difference in no3 concentrations at the two depths.
Answers: 1
The reaction is first order in cyclopropane and has a measured rate constant of k=3.36×10−5 s−1 at 7...
History, 18.12.2020 04:30
English, 18.12.2020 04:30
History, 18.12.2020 04:30
Mathematics, 18.12.2020 04:30
History, 18.12.2020 04:30
English, 18.12.2020 04:30
Health, 18.12.2020 04:30
Mathematics, 18.12.2020 04:30
History, 18.12.2020 04:30
Mathematics, 18.12.2020 04:30
Spanish, 18.12.2020 04:30
Computers and Technology, 18.12.2020 04:30