2. In the pandemic, Oxygen is used to save thousands of lives. An oxygen tank has a volume of 40 L and the internal pressure is 2000 psi. If the ideal gas constant is 1555 ft- Ib/(slug-ºR), determine the density and weight of the oxygen at 65 °F and atmospheric pressure of 14.7 psi.

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.