Biology
Biology, 30.06.2019 04:00, brittanysanders

What happens to energy content of substance when is heated?

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Chemistry, 02.07.2019 04:00, hannamcbrayer1
A155-g sample of a unknown substance was heated from 25.0°c to 40.0°c.in the process, the substance absorbed 5696 j of energy. what is the specific heat of the substance?
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Biology, 07.09.2019 00:10, caitlynnpatton1208
Ethan is observing chemical and physical properties of a substance. he heats a substance and observes that the substance turns from a brown solid to a black powder. he refers to several chemistry journals that claim this represents a chemical reaction. from his observation and research, he concludes that the substance goes through a chemical change when heated. how can ethan best defend his conclusion? a by demonstrating that the substance will eventually melt if the temperature continues to increase b by verifying that the substance is now made up of different molecules than before it was heated c by verifying that the substance is made up of only one type of element d by demonstrating that the substance is less dense after it is heated
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Chemistry, 16.09.2019 20:30, Deadpool9609
Which statement is true for a heating curve? a.) it shows how the pressure of a substance changes when heated. b.) it shows how the temperature of a substance changes when heated. c.) it shows how the volume of a substance changes when heated. d.) it shows how the mass of a substance changes when heated.
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Chemistry, 16.10.2019 00:10, Zykuko
Which statement is true for a heating curve? a. it shows how the pressure of a substance changes when heated, b. it shows how the temperature of a substance changes when heated. oc. it shows how the volume of a substance changes when heated. od. it shows how the mass of a substance changes when heated. reset next
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