1.0 g of magnesium is burnt with 0.56 g O_(2) in a closed vessel. Which reaction is left in excess and how much ? ( At. wt. Mg = 24, O = 16)

1.0 g of magnesium is burnt with 0.56 g O_(2) in a closed vessel. Whic

1.	1.0 g of magnesium is burnt with 0.56 g O_(2) in a closed vessel. Which reaction is left in excess and how much ? ( At. wt. Mg = 24, O = 16)
Answer» `MG, 0.16 g ` `O_(2), 0.16 g` `Mg, 0.16 g` `O_(2), 0.28 g` Solution :`M g + 1/2 O_(2) RARR MgO` `(1.0)/(24) (0.56)/(32)` Oxygen is LIMITING reagent so `(0.5)/(12) - x(0.07)/(4) - x/2` `(0.07)/(4) - x/2 = 0` `x=(0.07)/(2)` excess `Mg=(0.5)/(12) - (0.07)/(2)` mole `rArr 1-0.7xx12= 0.16g`