Which of the following reactions involves two or more substances combining to form a new compound?

A marshmallow has an initial volume of 0.084 L at standard pressure (1.0 atm). If the marshmallow is placed in a vacuum chamber and the final volume is 0.785L, what is the pressure inside the chamber?

Who discovered the electron?

How are polyatomic ions named when found in ionic compounds? a. their endings are changed to - ide b. their endings are changed to - ite c. their names are the same as the polyatomic's name d. they do not appear in ionic names

How many atoms are in a mole of oxygen ... how many molecules are in a mole of caffenine ... how much does a mole od diatomic nitrogen weigh

What is a chemical entity that forms a complex ion around a central atom?

Which compound becomes less soluble in water as the temperature of the solution is increased

In 1909 Fritz Haber discovered the workable conditions under which nitrogen, N2 (g), and hydrogen, H2 (g), would combine using to produce ammonia.

How can you classify matter

What type of material can make up a mudflow? a. trees b. boulders c. soil d. all of the above

What is bedrock layer