Chemistry, 13.12.2020 04:20, ayoismeisjjjjuan
55.. Students were asked to explain Earth's motion around the Sun. Two students responded:
Student A: Earth moves around the Sun because the gravitational pull from the sun attracts the Earth.
Student B: The gravitational force pulling the Earth to the Sun is equal to the force pulling the Sun towards the Earth.
Which student is correct? Explain your answer.
Answers: 2
Chemistry, 23.06.2019 01:30, babygirl091502
In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i
Answers: 1
Chemistry, 23.06.2019 08:40, Riplilpeep
Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.
Answers: 1
Chemistry, 23.06.2019 13:00, madelyngv97
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
55.. Students were asked to explain Earth's motion around the Sun. Two students responded:
Student...
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