The heat of fusion of diethyl ether is . Calculate the change in entropy when of diethyl ether freezes at . Be sure your answer contains a unit symbol. Round your answer to significant digits.

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?