Describe the empirical formula of the oxide
The 1.45 g sample of phosphorus burns in the air and outlines the 2.57 g of a phosphorus oxide. Describe the empirical formula of the oxide. Express your answer in detail as a chemical formula.
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Determine the number of moles in 75.5g ofAl2O3, Determine the mass in grams of one molecule of CBr4
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The bridge is to be built in shape of the semielliptical arch and is to have the span of 100 feet. Height of arch, at the distance of 40 feet from center, is to be 10 feet. Determine height of arch at its center.
The 4.78-g sample of aluminum totally reacts with the oxygen to outline the 6.67 g of aluminum oxide. Use this data to determine the mass percent composition of aluminum in the aluminum oxide.
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Fingernail-polish remover is primarily acetone (C3H6O). Determine the numbers of acetone molecules are in a bottle of acetone with a volume of 405 mL? (the density of acetone =0.788 g/cm3 ).
If an area of triangle ABC is 14 square meters, with a = 20 m and b = 8 m, determine all possible measures for angle C.
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