4.55kg to grams. Express your answer to three significant figures and include the appropriate units

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons