Asolution is made by dissolving 373.5 g of pb(no3)2 (molar mass: 331.2 g/mol) in 2.00 × 103 g of water. what is the molality of the solution?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out