34 grams of carbon react with an unlimited amount of h2o. the reaction is: c + h2o → co + h2 the equation is balanced. the starting substance is carbon, c. the ending substance is hydrogen, h2. using the periodic table, find the atomic mass of c.

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)

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

Which change to the system wood cause the freely-moving piston to lower?