Select the correct answer.
Which of the following is the best instrument to use to prepare a solution?
A. beaker
B. test tube
C. crucible
D. volumetric flask

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?

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