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
Mathematics, 22.06.2019 02:30
Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?
Answers: 1
What was observed that led to the arrangement of sixty-three already-known elements by increasing at...
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