If the student did another experiment by mixing 1.33 grams of barium chloride and 1.33 grams of Na2SO4 in deionized water. Determine how many grams of excess reactant left over after the reaction. Keep two decimal places.

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 empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

What state of matter is ice a. liquid b. element c. solid d. gas