What mass of hydrogen is in the container
A 25 L container holds hydrogen gas at a guage pressure of .25 atm and a temperature of 0 C. What mass of hydrogen is in the container and how many molecules are there?
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If a divalent metal ion is inserted in the center of theporphine ring, tis charge will exactly balance the two negative charges of the dianion.
An object is at distance s from a thin glass lens of focal length f. The lens is surrounded by air. The image is at distance s' from the lens. Draw a graph of s' versus s. Explain physically why the graph varies as it does.
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