A Compound Has Haemoglobin Like Structure. It Has One Fe. It contain4.6% Of Fe. The Approximate Molecular Mass Is

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A compound has haemoglobin like structure. It has one Fe. It contain4.6% of Fe. The approximate molecular mass is


Correct option is

1200 g mol–1

1 g atom of Fe (50 g Fe) is present in 1 mole of the compound. As 4.6 g Fe are present in 100 g of the compound, 56 g of Fe will be present in  of the compound. Hence approximate molecular mass = 1200




10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules. The gas X is


The volume of water to be added to 100 cm3 of 0.5 N H2SO4 to get decinormal concentration is



250mL of a sodium carbonate solution contains 2.65 grams of Na2CO3. If 10mL of this solution is diluted to one litre, what is the concentration of the resultant solution?

(mol. wt. of Na2CO3= 106)


7.5 grams of a gas occupy 5.6 litre of volume at S.T.P The gas is


An aqueous solution of 6.3 g of oxalic acid dihydrate is made up to 250mL. The volume of 0.1 N NaOH required to completely neutralize 10mL of this solution is 


How many moles of electrons weight one kilogram?


Number of atoms in 558.6 g Fe (molar mass Fe = 55.86 g mol–1)is 


3 g of an oxide of a metal is converted to chloride completely and it yielded 5 g of chloride. The equivalent weight of the metal is 



What will be the volume of the mixture after the reaction?

(g)NH3 (1L) + (g) HCl (1.5L) → NH4Cl (s)


In Haber process, 30 litre of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will the composition of the gaseous mixture under the aforesaid condition in the end?