Carbon dioxide (co2) is a gas at room temperature and pressure. however, carbon dioxide can be put under pressure to become a "supercritical fluid" that is a much safer dry-cleaning agent than tetrachloroethylene. at a certain pressure, the density of supercritical co2 is 0.469 g/cm3. what is the mass of a 25.0-ml sample of supercritical co2 at this pressure?
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For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
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Carbon dioxide (co2) is a gas at room temperature and pressure. however, carbon dioxide can be put u...
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