Chemistry, 06.05.2020 07:02 sammiirene
Which statement explains why carbon dioxide (CO2) is a gas at room temperature? A. There are constant interactions between the CO2 molecules. B. There are weak interactions between the CO2 molecules. C. There are no interactions between the CO2 molecules. D. There are strong interactions between the CO2 molecules.
Answers: 1
Chemistry, 22.06.2019 01:00
How can you use chemical equations to predict the products of the reaction you can carry out?
Answers: 1
Chemistry, 22.06.2019 03:00
Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
Answers: 1
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
Which statement explains why carbon dioxide (CO2) is a gas at room temperature? A. There are constan...
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