The Greek letter δ (delta) is used to signify . a) an ion
b) a charged particle
c) a mixed number
d) a small fraction
e) none of the above

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.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?