Identify each of the following as either an element or Compound. Write (E) for Element and (C) for compound.

a. carbon
b. water
C. aluminum foil
d. plastic
e, tin
f. silicon dioxide
g. helium
h, arsenic
i. carbon dioxide
j. sodium chloride (table salt)

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.