The mass of one gallon of water is approximately 3.78 kg or 3780 grams. How many moles are contained in one gallon of water? a. 102
b. 210
c. 120
d. 201

What is a difference between a mixture of elements and a mixture of compounds

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction

Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton             rosalind franklin marie curie             gertrude b. elion ada yonath             henry cavendish robert boyle             antoine lavoisier mario j. molina             svante arrhenius