This volcanic rock formed from lava in gas.

a. slowly; rich
b. quickly; rich
c. slowly; poor
d. quickly; poor

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?

Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction

How many moles are in 1.26*10^24 particles in significant figures