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Which element has 2 valence electrons and is in period 4? A. Sodium B. Carbon C. Beryllium D. Calcium
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Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm
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Matches the chemical name of each oxide of phosphorus to its chemical formula
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Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.
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Chemistry, 22.06.2019 18:30
The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false
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Which element has 2 valence electrons and is in period 4?
A. Sodium B. Carbon C. Beryllium D. Calci...
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