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In NH4NO2, nitrogen in NH4+ has an oxidation state of -3. The nitrogen in NO2- has an oxidation state of +3. When NH4NO2 decomposes: The ...Read more

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The answer is given as cosx.cos2x.cos3x = 2*cosx*xos2x*cos3x/2 and so on until we get [2 cos^2 3x + 2 cos 3x.cos x]/4 which is furthurRead more

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Fe3O4 + 8 KMnO4 + 8 H2SO4 → 3 Fe2(SO4)3 + 8 MnSO4 + 4 H2O + 8 K2SO4. This equation shows that one mole of Fe3O4 reacts with eight moles of KMnO4 ...Read more

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2KMNO4+10FeSO4+8H2SO4= K2SO4+2MNSO4+5Fe2(SO4)3+8H2O FeSO4+ KMnO4+H2SO4-> Fe2(SO4)3+ MnSO4+ H2O First of all, let's concentrate on what is ...Read more

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Take common 2 cosA from numerator and 2 sinA from denominator. 2 cosA(sinA + cosA)/ 2 sinA (sinA + cosA) = Cos A/sinA = CotA = RHS. Hence proved.Read more

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A + B + C = π sin 2A + sin 2B - sin 2C = 4 cos A cos B sin C From the double angle formula: sin 2Θ = 2 sin Θ cos Θ sin 2A + sin 2B - sin 2C ... Read more

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evaluate:sinx. sin2x. sin3x Ans:Hello Student,Please find answer to your question belowYou can solve in many ways which would depend on the ...

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(CH3)2-CH-CH2-COOH reacts with Br2,P ,,,,aq.NaOH,,,,H+ what is the final product...?????. it is an example of HVZ reaction.substitution of ...

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3sinx+4cosx=5. Do sqaring on both sides. The equation will be as :- 9sin 2 x+16cos 2 x+24sinx.cosx=25. Let the above equation be no.1. Think that the value ofRead more

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