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Chemistry, 28.10.2019 22:31 camiloriveraveoxbgd6
Check all the statements that are correct. conservation of mass means:
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we can start a reaction with different types of elements than we have at the end of the reaction.
we must start and end with the same amounts of matter
matter cannot be created
matter can be destroyed in a chemical reaction
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Air can be considered a mixture. which statement does not explain why?
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What does a numerical subscript following an element in a chemical formula mean?
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In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as
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Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.
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Check all the statements that are correct. conservation of mass means:
question 1 options:
question 1 options:
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