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Chemistry, 21.06.2019 14:00
Asample of gas occupies 17 ml at β112Β°c. what volume does the sample occupy at 70Β°c a. 10.6 ml b. 27 ml c. 36 ml d. 8.0 ml you
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Chemistry, 23.06.2019 01:00
Which of the following is the molecular formula for a simple sugar? a. cooh b. h2o c. oh d. c6h12o6
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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.
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Chemistry, 23.06.2019 17:30
Which of the following factors does not affect soil formation? a. precipitation b. time c. erosion d. none of the above
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