Chemistry, 29.12.2021 02:40 adammartinez12
25) Plastics such as polyethylene and polypropylene are ubiquitous in our
culture. As shown, the simple small molecules combine to form long polymer
chains. These polymer chains are held together by
to make
flexible, easily formable, and durable materials.
A) ionic bonds
B) covalent bonds
C) intermolecular forces
D) attraction and repulsion
Answers: 3
Chemistry, 21.06.2019 22:00
If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million
Answers: 3
Chemistry, 22.06.2019 02:00
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
Answers: 3
Chemistry, 22.06.2019 04:00
Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
Answers: 1
Chemistry, 22.06.2019 12:30
The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms
Answers: 1
25) Plastics such as polyethylene and polypropylene are ubiquitous in our
culture. As shown, the s...
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