Chemistry, 15.04.2021 16:50 carlosluiscontrerasp
How many moles are in a sample having 9.3541 x 10^13 particles?
Answers: 2
Chemistry, 21.06.2019 13:00
In a closed or isolated system , matter can not be created or destroyed. it can change forms but is conserved true or false
Answers: 1
Chemistry, 21.06.2019 18:10
Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.
Answers: 2
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Chemistry, 22.06.2019 17:40
How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
Answers: 3
How many moles are in a sample having 9.3541 x 10^13 particles?...
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