How many moles of ammonia (NH3) are in 224L at standard pressure?

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.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which diagram represents the phase tha occurs after a solid melts?