Chemistry, 03.12.2019 23:31 Karinaccccc
Ptolemy and copernicus were astronomers who had proposed theories about the solar system. ptolemy believed that the planets and the sun orbited earth. copernicus believed that earth and other planets circled a stationary sun. which of these statements best explains why ptolemy and copernicus made different observations about the solar system?
they studied outdated theories and evidences.
they had different backgrounds and interests.
they used incorrect methods of experimentation.
they made errors in their scientific calculations.
Answers: 2
Chemistry, 22.06.2019 12:00, Unknowndragon42
Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon
Answers: 2
Chemistry, 23.06.2019 13:30, michelle8978
Why hydrochloric acid neutralized first when you titrate a mixture of hcl& ch3cooh against standard sodium hydroxide
Answers: 1
Ptolemy and copernicus were astronomers who had proposed theories about the solar system. ptolemy be...
Mathematics, 20.11.2020 03:30
English, 20.11.2020 03:30
History, 20.11.2020 03:30
Physics, 20.11.2020 03:30
Biology, 20.11.2020 03:30