Chemistry, 19.09.2019 18:00 Cartucho1978
Consider the following reaction: 4nh3(g) 7o2(g) → 4no2(g) 6h2o(l) consider an experiment in which you react ammonia and oxygen. at the end of the experiment, you find that you produced 27.0 g of water, and 8.52 g of ammonia is left over. calculate the initial mass of ammonia. assume the reaction went to completion.
Answers: 2
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
Chemistry, 23.06.2019 13:00
Which of the following statements is true about both nuclear fusion and nuclear fission? they occur in the sun. heavy atoms are split. two light nuclei combine. some mass changes into energy.
Answers: 1
Consider the following reaction: 4nh3(g) 7o2(g) → 4no2(g) 6h2o(l) consider an experiment in which y...
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