Write out in sentences how to make 250 mL of a 0.50 M solution of sodium phosphate. 1. Determine the number of moles of solute which are needed.

2. Convert the moles of solute to grams of solute.

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?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

How is the shape of the poem “peer” connected to its meaning?