When solutions of sodium chloride are made for intravenous use, it must have a molarity of 0.155 M. When starting with a 5.00 L 1.00 M NaCl stock solution, how
many milliliters of the stock solution will be used to make 455 mL of the needed
solution?

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

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we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).