How many moles are there in 15.0 grams of SiO2?
a
0.170 mol
b 0.340 mol
c 0.534 mol
d 0.250 mol
e 0.208 mol
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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.

Using the periodic table, complete the table to describe each atom. type in your answers

In a reaction equation, where are the products located? a.) above the arrow b.) to the right of the arrow c.) to the left of the arrow d.) below the arrow