- The density of lead is 11.4 g/cm3 at 25°C. Calculate the volume occupied by 25.0 g of lead.?

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Identify X in the reaction below.
X + 1n → 142Ba + 91Kr + 3 1n? How to find the roots of y=3x^2-20x-7? I have to prove that √(5n+7) is irrational, given n is a positive integer? Isnt a triangle just a 3 sided square? The length of the minor arc AB of a circle, centre 'O', is 2π cm and the length of major arc is 22π cm.?