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What is the percent yield of carbon dioxide if the reaction of 76.8 g of carbon monoxide produces 87.6 g of carbon dioxide??? A voltage across a 2.2kW toaster that produces a current of 10A is? Define the rank and nullity of a linear mapping? Is the earth flat or a sphere and i want proof? If summation a^2k converges, does summation (ak) converges? prove.?