What does the photoelectric effect mean

What is the volume of 1.00 mole of a gas at standard temperature and pressure?

What is the smallest division on this balance? 1 g 0.1 g 0.01 g 0.001 g

A solution of NaCl (aq) is added slowly to a solution of lead nitrate, Pb (NO 3) 2 (aq), until no further precipitation occurs. The precipitate is collected by filtration, dried, and weighed. A total of 12.11 g CaCl2 (s) is obtained from 200.

Calculate the mass in grams of 1.2044 x 10^24 atoms of lead (Pb). A.) 207.2 g B.) 2.0 g C.) 0.50 g D.) 414.4 g

What is _CaH2 (s) + _H2O (l) → _Ca (OH) 2 (s) + _H2 (g)

Prepare a solution that is 0.1 M acetic acid and 0.1 M sodium acetate by measuring out 5.0 mL of the 1.0 M acetic acid solution and 5.0 mL of the 1.0 M sodium acetate solution in a 100 mL graduated cylinder, diluting the 10.

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)