Mathematics, 27.09.2020 22:01 paigejosie6473
What was observed that led to the arrangement of sixty-three already-known elements by increasing atomic weights in the periodic table?
A. A repetition occurs in chemical and physical properties.
B. An atomic weight corresponds to the existing abundance.
C. The number of neutrons and protons increased by one.
D. The chemical compounds formed by the elements increased by one.
Answers: 3
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9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10
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What was observed that led to the arrangement of sixty-three already-known elements by increasing at...
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