HELP!!! I dont understand anything
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Chemistry, 21.06.2019 13:00
Asolution at 25 degrees celsius is 1.0 × 10–5 m h3o+. what is the concentration of oh– in this solution?
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Chemistry, 22.06.2019 06:30
Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.
Answers: 3
Chemistry, 23.06.2019 07:10
1) a light bulb takes in 30 of energy per second. it transfers 3j as use energy. calculate the efficiency. second. it transfers 3j as useful light energy and 27j as heat energy. calculate the efficiency
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Social Studies, 31.07.2019 18:30
Biology, 31.07.2019 18:30
History, 31.07.2019 18:30
Social Studies, 31.07.2019 18:30
Business, 31.07.2019 18:30
Social Studies, 31.07.2019 18:30
Social Studies, 31.07.2019 18:30
Social Studies, 31.07.2019 18:30
Biology, 31.07.2019 18:30