- Simplify (s-^2t-^7)-^5?

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If I double the radius of a right cylinder would the volume double also? You have 530. mL of a 0.561 M Pb(NO3)2 solution. How many moles of NaCl must be added to precipitate a solid?The Ksp of PbCl2 is 1.6*10-5? Can anyone explain in detail the redox reaction between Si + 4HNO3 = SiO2 + 4NO2 + 2H2O? When the difference between the dry bulb and the wet bulb temperatures on psychrometer is large what does this say about how dry the air is? Interest question - College math?