Chemistry, 31.03.2021 19:50 ethancarter560
Jennifer mixes substances during a lab experiment. She observes the four effects listed below. Which of these effects indicated that a chemical reaction has taken place? NEED HELP ASAP!!!
a. A clear, lemon-scented liquid continues to smell like lemon when it is mixed with water.
b. A piece of shiny metal begins to bubble when placed in a clear liquid.
c. A pink powdered substance turns water pink when they are mixed together.
d. A white solid disappears when mixed with water.
Answers: 1
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Read the chemical equation. 2c2h2 + 5o2 β 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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Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.
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Jennifer mixes substances during a lab experiment. She observes the four effects listed below. Which...
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