Achemist requires 0.811 mol na2co3 for a reaction. how many grams does this correspond to?

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0