Express the answers to the following calculations in scientific notation 12

Express the answers to the following calculations in

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3.Express the answers to the following calculations in scientific notation: (12 points) 4.What is the number of significant figures in each of the following measurements? (8 points) 1
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5.Express the results in the proper number of significant figures. (12 points) 6.Carry out the following conversions: (16 points)a.22.6 m to dm=226dmb.25.4 mg to kilograms=.025400g 7.The average speed of helium at 25°C is 1255 m/s. Convert this speed to miles per hour (mph). (4 points) 2
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8.How many minutes does it take light from the sun to reach Earth? (The distance
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  • Summer '14
  • Chemistry, Chemical substance, Chemical compound

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