Chemistry, 06.11.2019 20:31 ayowazzzgood
In a lab, silver nitrate, agno₃, is dissolved in water until no solid is observed in the container. then, a solution of sodium chloride, nacl, is added to the container. when you combine these aqueous solutions, there is no noticeable change in temperature; however, a solid precipitates and there is a slight change of color. which statements about the lab experiment involving silver nitrate and a sodium chloride solution are true?
a. formation of a solid indicates that a chemical reaction occurred
b. the initial disappearance of silver nitrate in water indicates a chemical reaction occurred
c. the color change of the solution indicates a chemical reaction occurred
d. a chemical reaction occurred when silver nitrate was added to water
e. a chemical reaction occurred when the solutions were combined
f. the lack of temperature change indicates a chemical reaction didn't occur
Answers: 3
Chemistry, 21.06.2019 22:30, larreanathalie3523
The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.
Answers: 2
In a lab, silver nitrate, agno₃, is dissolved in water until no solid is observed in the container....
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