A saturated solution of NaNO3 is prepared at 60.°C using 100. grams of water. As this solution is cooled to 30.°C, NaNO3 precipitates (settles) out of the solution. The resulting
solution is saturated. Approximately how many grams of NaNO3 settled out of the original
solution?

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Given the following reaction: c3h8+5o2=3co2+4h20 how many grams of co2 will be produced 7 g of c3h8 and 98 g of o2