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Is it true that the oxidation number of an ion is equal to its protons subtracting its electrons? What is the partial pressure of N2 in a mixture of N2 and O2 having a total pressure of 1075 torr if the partial pressure of O2 is 720 torr? How much butter is equal to 2 tablespoons of oil? Chi mi sa spiegare questa dervata (ln^2x)/x dx? Help me to solve the following question!
Find integers x and y such that 57x+79y=17, and 400