Answers: 1
Chemistry, 23.06.2019 00:30, terryg4397
Fred is studying a substance that is made out of only one element. this means that
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Chemistry, 23.06.2019 11:20, bobthebattlebot
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
What is the name for fe(no3)3 • 6h2o? iron (iii) nitrate hexahydrate iron (iii) nitrate heptahydrat...
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Mathematics, 17.11.2021 16:50