Chemistry, 15.12.2020 23:10, DESI111609
Giselle is working with a chemical substance in a laboratory. She observes that when the chemical is heated, it gives off a gas. She assumes that the gas is oxygen but decides to test this assumption to verify it. Which type of scientific knowledge is Giselle’s assumption? A. fact B. hypothesis C. law D. observation E. theory
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Chemistry, 22.06.2019 06:00, citlalli30
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Chemistry, 22.06.2019 13:20, alejandra340
Can someone me with 3 and 4 plz. this is for masteries test.
Answers: 2
Chemistry, 23.06.2019 01:50, kayleebueno
Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2
Answers: 2
Giselle is working with a chemical substance in a laboratory. She observes that when the chemical is...
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