Lodestone`(Fe_3O_4)` has enormous application because it is a strong magnet.

Fe_(3)O_(4) is ferrimagnetic at room temperature but at 850K it becomes::

Explain [Fe(H_2O)_6]^(3+) is paramagnetic.

The simple Bohr model is not applicable to He^4 atom because.

W is the mass of iron (in g) which will be converted into Fe_(3)O_(4) by the action of 18 g of steam on it . What is the value of W/7 ? Fe+H_(2)O to Fe_(3)O_(4)+H_(2)

Which of the following statements about the given reaction are correct? 3Fe(s) + 4H_2O(g) rarr Fe_3O_4(s) + 4H_2(g) (i) Iron metal is getting oxidised (ii) Water is getting reduced (iii) Water is acting as reducing agent (iv) Water is acting as oxidising agent

Calculate the weight of iron which will be converted into its oxide (Fe3O4) by the action of 14.4g of steam on it.

Calculate oxidation number of Fe in Fe2O3.

Calculate oxidation number of Fe in Fe2O3.

2.0g of a sample contains mixture of SiO_2 and Fe_2O_3 . On very strong heating, it leaves a residue weighing 1.96 g . The reaction responsible for loss of mass is given below. Fe_2O_3(s)rarrFe_3o_4(s)+O_2(s) , (unbalance equation) what is the percentage by mass of SiO_2 in original sample ?