Chemistry, 05.11.2020 21:40 laylay4527
A source of sound is kept in a jar in a vacuum. Air is slowly introduced in to the jar. What happens to the sound coming out of the jar? A. The loudness of the sound increases gradually. B. The loudness of the source decreases gradually. C. The sound remains unchanged. D. The pitch of the sound increases gradually. E. The pitch of the sound decreases gradually.
Answers: 2
Chemistry, 21.06.2019 17:30
Given that the molar mass of nano3 is 85.00 g/mol, what mass of nano3 is needed to make 4.50 l of a 1.50 m nano3solution? use .6.75 g18.9 g255 g574 g
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Chemistry, 21.06.2019 20:30
An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?
Answers: 1
Chemistry, 22.06.2019 20:10
What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.
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Chemistry, 22.06.2019 22:00
Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope
Answers: 1
A source of sound is kept in a jar in a vacuum. Air is slowly introduced in to the jar. What happens...
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