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Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?
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The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false
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Chemistry, 22.06.2019 13:50
Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
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Chemistry, 22.06.2019 14:50
How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.
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What is the temperature (°c) of 1.75 g of o2 gas occupying 3.10 l at 1.00 atm? enter your answer in...
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