The densities for aluminum and iron are 2.7 gcm 3 and 7.86, Ask an Expert

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The densities for aluminum and iron are 2.7 g/cm 3 and 7.86 g/cm3, respectively. What is the ratio of the mass of an object made of aluminum to that of the same object made of iron? What is the mass in grams for a 1000-mL volume (1 liter) of iridium if it has a density of 22.42 g/mL?

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