Which of the following is the correct model of C8H18?
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Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize
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What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?
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Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.
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