04:19Density - Why does oil float on water? | #aumsum #kids #science #education #childrenIt's AumSum Time848views
11:06Chemistry Basics | classification and properties of matter, densityThe Science Classroom372views
Multiple ChoiceWhen lead levels in blood exceed 0.80 ppm (parts per million) the level is considered dangerous. 0.80 ppm means that 1 million g of blood would contain 0.80 g of Pb. Given that the density of blood is 1.060 kg/cm3, how many grams of Pb would be found in 400.00 mL of blood at 0.620 ppm?1522views13comments
Multiple ChoiceHow many mL of bromine are required to deliver 0.25 g of bromine into a reaction? (dBr = 3.12 g/cm3)333views
Open QuestionIf a substance has a large mass and a small volume, what can you conclude about it?229views
Open QuestionWhat is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL?306views
Open QuestionWhat two quantities must be known to calculate the density of a sample of matter?231views
Open QuestionIf the solid form of most molecules is heavier than the liquid form, why does ice float?174views
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