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Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 03:30
Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.
Answers: 2
Chemistry, 22.06.2019 09:30
Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?
Answers: 3
Mathematics, 13.05.2021 19:20
Physics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Chemistry, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Physics, 13.05.2021 19:20