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OpenStudy (anonymous):
2C2H2+5O2-->4CO2+2H2O The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2. How many moles of O2 are needed to react completely with 35.0 mol C2H2? Please help me I have no idea how to do this and im really struggling to understand it properly
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