Questions in chemical-aritmatic

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	When potassium permanganate is titrated against ferrous ammonium sulphate, the equivalent weight of potassium permanganate is
	Boron has two stable isotopes, $^{10}B$(19%) and $^{11}B$(81%).The atomic mass that should appear for boron in the periodic table is
	What is the concentration of nitrate ions if equal volumes of 0.1 $M\,AgN{O_3}$and 0.1 $M\,NaCl$are mixed together
	Total number of atoms represented by the compound $CuSO_4.5H_2O$ is
	74.5 g of a metallic chloride contain 35.5 g of chlorine.The equivalent weight of the metal is
	7.5 grams of a gas occupy 5.8 litres of volume at STP the gas is
	The number of atoms in 4.25 g of $N{H_3}$is approximately
	One litre of a gas at STP weight 1.16 g it can possible be
	The vapour density of a gas is 11.2.The volume occupied by 11.2 g of the gas at ATP will be
	Equivalent weight of crystalline oxalic acid is