What is e°cell for the following reaction? [ select ] 2au(s) + 3ca2+(aq) → 2au3+(aq) + 3ca(s) is the reaction spontaneous?.

Explain how you might determine the rate of weathering on a sample rock

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.