Marcie fills a graduated cylinder with 15.0 mL of water. Paul finds the mass of a marble to be 2.21 g, then drops the marble into the graduated cylinder. If the
meniscus on the cylinder is now at 16.3 mL, what is the density of the marble?

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.

Astable atom that has a large nucleus most likely contains 1. more neutrons than protons. 2.more protons than neutrons. 3.equal numbers of protons and neutrons. 4.changing numbers of protons and neutrons.