6.023 $$ \times $$ 10²² molecules are present in 10 g of a substance 'x'. The molarity of a solution containing 5 g of substance 'x' in 2 L solution is _____ × 10^-3

The volume strength of 8.9 M H₂O₂ solution calculated at 273 K and 1 atm is ______. (R = 0.0821 L atm K^-1 mol^-1) (rounded off ot the nearest integer)

The mole fraction of glucose (C₆H₁₂O₆ ) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is _______.

The ratio of the mass percentages of ‘C & H’ and ‘C & O’ of a saturated acyclic organic compound ‘X’ are 4 : 1 and 3 : 4 respectively. Then, the moles of oxygen gas required for complete combustion of two moles of organic compound ‘X’ is ________.