An aluminum sample has a mass of 80.1 g and a density of 2.70g/cm3 . according to the date to what number of significant figures should the calculate volume of the aluminum sample be expressed?

What are the percent by mass of copper in penny lab

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?