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Chemistry, 23.06.2019 13:10
When can a hypothesis be elevated to the status of a theory? a) when it is validated by an experiment b) when data gathered from an experiment precisely fits predictions c) when it can be proved to be true d) when it meets the test of repeated experimentation
Answers: 2
Chemistry, 23.06.2019 18:30
Select the correct answer. which statement best explains the octet rule? a. atoms gain, lose, or share electrons to achieve a full valence shell. b. compounds always consist of eight electrons. c. molecules always consist of eight atoms. d. all atoms require eight electrons to form bonds.
Answers: 2
Chemistry, 23.06.2019 21:10
Which of the following monomers is least likely to undergo cationic polymerization? a) propylene b) styrene c) methyl acrylate d) vinyl acetate e) isobutylene
Answers: 1
Chemistry, 24.06.2019 02:00
Drag the tiles to the correct boxes to complete the pairs. match the chemical name of each oxide of phosphorus to its chemical formula. phosphorus monoxide p4o7 diphosphorus tetroxide p2o5 tetraphosphorus heptoxide p2o4 diphosphorus pentoxide po arrowboth arrowboth arrowboth arrowboth
Answers: 1
A change in the internal energy of a system at constant pressure from a chemical reaction will resul...
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