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(i) Calculate the no. of \(e^-\) in 5 mole of \(NH_3\) ?
(ii) Calculate the no. of Protons in 0.5 mole of \(H_2SO_4\) ?
(iii) Calculate the no. of Neutrons in 1 mole of \(D_2O\) ?
(iv) Calculate the no. of atoms in 10 mole \(Na_2SO_4.10H_2O\) ?
Updated Wed, 28 Aug 2019 02:01 pm


A body of mass 4 kg lying on a rough plane inclined at \(30^\circ\) to the horizontal has an acceleration of 2 ms\(^{-2}\) when pulled directly up the plane by a force of 6 kg wt. Calculate its acceleration when a force of 6 kg wt. Calculate its acceleration when a force of 3 kg wt is applied down the plane. Given : g = 10 ms\(^{-2}\).
Updated Wed, 28 Aug 2019 10:44 am