1. how is the density of a substance calculated? 2. if the shape of an object is irregular, like a stone, how can you measure its volume? 3. if the volume of a cube of wood is15.625 cm3 and its mass is 10.00 grams, show the calculation for the density of the wood.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%

The same side of the moon always faces earth because the