How many kilojoules are needed to convert 7.80 grams of ice at -45*C to steam at 150.0*C?

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.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.