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Chemistry, 15.10.2019 03:30 estefaniapenalo
Which of the following best expresses the definition of an open system? (2 points)
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energy can enter or leave the system but matter cannot.
heat and matter are both able to enter or leave the system.
matter can enter or leave the system but energy cannot.
heat and matter can enter the system but cannot leave the system.
Answers: 1
Chemistry, 21.06.2019 20:40
You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen
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Chemistry, 22.06.2019 19:00
Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.
Answers: 1
Which of the following best expresses the definition of an open system? (2 points)
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answer
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