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Chemistry, 22.06.2019 00:00
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
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Chemistry, 22.06.2019 11:00
Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.
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Chemistry, 22.06.2019 23:00
What is the most common reason for matter changing its state?
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Chemistry, 23.06.2019 00:00
Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.
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38.25 grams of silicon is combined with 14.33 grams of nitrogen gas. how many grams of silicon nitri...
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