The molar mass of water (h2o) is 18.0 g/mol. a sample of water has a mass of 18.0 g. how many moles of water are contained in this sample?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

Asolid that forms and separates from a liquid mixture is called