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Advocard [28]
3 years ago
6

Its due this monday

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

13. Index Fossils

14. Index Fossils

15. C

16. Geologists use index fossils to define geological periods.

17. C

18. A

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Hello! Your answer would be a gain of electrons and a decrease in positive charge.

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With the gain of electrons, the element would become more negative as electrons bring with them a negative charge. Therefore, this would decrease the positive charge.

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chegg 2. What pattern did you observe measuring cell voltages with a silver electrode versus with a platinum/H2 electrode There is a difference of -0.786 V in silver

<h3>What is cell voltages ?</h3>

The difference in electric potential between two points, also known as voltage, electric potential difference, electric pressure, or electric tension, is what determines how much labor is required to move a test charge between the two sites in a static electric field. Volt is the name of the derived unit for voltage (potential difference) in the International System of Units. Joules per coulomb, or 1 volt equals 1 joule (of work) for 1 coulomb, is how work per unit charge is stated in SI units (of charge). The quantum Hall and Josephson effect was first employed in the 1990s, and most recently (in 2019), fundamental physical constants have been added for the definition of all SI units and derived units. Power and current were used in the previous SI definition for volt.

To learn more about  cell voltages from the given link:

brainly.com/question/18938125

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In general, they have the same chemical properties as chemical properties depend on the number of electrons in the valence shell i.e. the outermost shell in the atom of an element. 
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