The law of multiple proportions states that substances combine in predictable portions when excess reactants are used, the excess becomes leftovers when two elements combine, a and b, the ratio of the weight of b combining with a is always a whole number none of the above

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

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?