Match the scientific career with the appropriate definition.
1. a scientist who deals with the properties, composition, and reactions of substances physicist
2. a scientist who studies properties of matter such as gravity, motion and acceleration geologist
3. a scientist who observes and protects dolphins chemist
4. a scientist who works with the history of the earth and planets that is recorded in rocks paleontologist
5. a scientist who studies the origin of living organisms through fossils marine biologist
Answers: 3
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The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
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13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.
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Match the scientific career with the appropriate definition.
1. a scientist who deals with the pro...
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