A sample of water releases 50 Kj of heat when it cools from 50C to 30C. How many miles of water cooled?

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved

Which of the following describes the entropy change as a solution is made from a liquid and solid