How many atoms are in 437g of silver

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

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?

In salt water solution,the salt is the blank