50. Determine the number of atoms in each sample. a. 45.0 g Si
b. 45.0 g Sn
c. 28.2 mg Pb
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How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

Nonmetal halogen family atmoic mass 35

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean