Sound waves are longitudinal, mechanical, compression waves.
A. True
B. False...
Answers: 1
Chemistry, 23.06.2019 07:30
Which statement is actually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
Answers: 2
Chemistry, 23.06.2019 13:30
How many more valence electrons does sodium need to have a full outer valence shell
Answers: 1
Chemistry, 24.06.2019 01:00
What is an effect of gravity on objects on the surface of earth? check all that apply. objects “fall” toward the center of earth. objects are pulled by earth but do not pull on earth. objects accelerate at a rate of 9.8 m/s each second. objects travel at a rate of 9.8 m/s toward the center of earth. objects are pulled by earth more strongly than they pull on earth.
Answers: 1
Chemistry, 24.06.2019 01:00
Which of these statements is correct about plastic and concrete? a) both plastic and concrete are minerals because they are natural, solid materials. b) both plastic and concrete are not minerals because they are made by humans. c) plastic is a mineral because it has a definite crystal structure but concrete is not a mineral because it is organic. d) plastic is not a mineral because it is not formed under the ground but concrete is a mineral because it has a definite composition.
Answers: 1
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