What is the mass of H2O in 3 moles?

What parts of an atom make up almost all the mass of the atom?

Which type of orbit does the earth have with the sun?

What is starchelement compound or mixture

Riley rubs two rocks together. She notices that some of the surface of one of the rocks was worn away to form small particles. What has happened to that rock?

When the metallic element sodium combines with the nonmetallic element bromine, br2 (l), what is the chemical formula of the product?

Selena is growing geraniums outdoors in a pot. During the day, the temperature in her area averages 22°C (72°F). At night, the temperature has been dropping to around 13°C (55°F). What advice would you give to Selena and why?

How many carbons are in a molecule of hexane?

How does th composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?

You are asked to prepare 500 mL 0.250 M acetate buffer at pH 5.00 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the questions regarding the preparation of the buffer. 1.

Which direction do electrons move in when metals react with non-metals?