Chemistry, 18.05.2021 23:20 carlyembry123pbhhbm
Which statement below best describes a catalyst?
Question 3 options:
An item that can slow reactions rates
A molecule that is consumed in a chemical reaction
An item that can increase reaction rates
An item that increases the concentration of reactions
Answers: 3
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Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?
Answers: 2
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Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.
Answers: 1
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If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3
Answers: 2
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Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?
Answers: 1
Which statement below best describes a catalyst?
Question 3 options:
An item that can s...
An item that can s...
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