Chemistry, 22.10.2019 05:00 nickboy52210
Which statement about astrology is not true? the positions of the planets at the time of birth have influence on a persons life
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Avogradoa number was calculated by determining the number of atoms in?
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Chemistry, 23.06.2019 17:10
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.
Answers: 3
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