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At 70°C, the pH of water is 6.41. What is the ion-product constant of water, Kw, at 70°C? Solve the following second order differential equations using undetermined coefficients
The real value of rfor which systemof equation 2rx-2y+3z=0.x+ry+2z=0,2x+rz=0 hasnon trivial solution is? If order of abc matrix is 4*3,4*5,7*3 then (a^t.b^t)^t =c^t then what is order by solving proved it. these are transpose? Calculate the mass of water produced when 8.48 g of butane reacts with excess oxygen.?

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