What volume of hydrogen gas, at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass =10.8 ) from the reduction of boron trichloride by hydrogen?
Decreasing order (first having highest and then others following it) of mass of pure NaOH in each of the aqueous solution. (P) 50 gm of 40%(w/w)NaOH (Q) 50 gm of 50%(w/v)NaOHdsoln. =1.2gm/ml (R) 50 gm of 20MNaOHdsoln. =1gm/m
50 mL solution of BaCl2 (20.8% w/v) and 100 mL solution of H2SO4 (9.8% w/v) are mixed (Ba= 13 Cl = 35.5, S = 32).BaCl2+H2SO4⟶BaSO4↓+2HClWeight of BaSO4 formed is: