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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


If \(asin^2\) x + b \(cos^2\) x = c, \(bsin^2\) y + \(acos^2\) y = d and a tan x = b tan y then \(\frac{a^2}{b^2}\) =
(i) \(\frac{(a-d)(c-a)}{(b-c)(d-b)}\)
(ii) \(\frac{(e-c)(b-d)}{(a-c)(a-d)}\)
(iii) \(\frac{(b-c)(d-b)}{(a-d)(c-a)}\)
(iv) \(\frac{(d-a)(c-a)}{(b-c)(d-b)}\)
Updated Wed, 28 Aug 2019 02:00 pm