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Found in the bladder lining peculiar cell that slide over one another? If an object with a mass of 35 grams has a volume of 70cm cubed and its length is 40cm, what is the density of the object? Who came up for the name for our planet? A 2.012 g sample of a compound of nitrogen and oxygen has 0.522g of nitrogen. Calculate its empirical formula.? If a and b are roots of equation x^2 +x -12 =0 such that a>b then equation whose roots are 2a and 3b is ?Please!?