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Home Q & A Board Science-Related Homework Help Physics
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yuema yuema
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8 years ago
1.Making estimates. One sheet of paper is about 0.1 mm thick. An atom is about 10-10 m across. About how many atoms thick is one sheet of paper?

2.The universe is a million trillion seconds old. Write this number in ordinary (not powers of 10) notation.

3.In a typical large coal-fed electrical generating plant, 1.2 tons of coal are burned every 8 seconds. On the simplifying assumption that oxygen and carbon atoms have the same weight, about how many tons of carbon dioxide enter the atmosphere every hour from such a plant (coal is nearly pure carbon)?

4.On the simplifying assumption that oxygen and carbon atoms have the same weight, how many tons of carbon dioxide gas are formed when one ton of coal burns (coal is nearly pure carbon)?
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5seal5seal
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