- Simplify the complex fraction?

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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 many degrees of strog base and strog acid? Help me to solve the following question!
Find integers x and y such that 57x+79y=17, and 400 How long do the batteries in Beats executives last? Which pattern of speciation is most important in nature? Allopatric or sympatric why?