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State one important difference between a physical change and a chemical change?
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What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds
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Chemistry, 23.06.2019 04:10
Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction
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Chemistry, 23.06.2019 08:00
Can anyone answer these questions? ? i need it before 1: 00pm today
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If 30.0 g of H2SO4 reacts with sodium hydroxide, what mass of water is produced?...
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