Question

30 g of magnesium and 30 g of oxygen are reacted, then the residual mixture contains
(a) 50 g of Magnesium oxide and 10 g of oxygen
(b) 40 g of Magnesium oxide and 20 g of oxygen
(c) 45 g of Magnesium oxide and 15 g of oxygen
(d) 60 g of Magnesium oxide only

Answer 1

(d)The mixture contains 60g of Magnesium Oxide only.

This is because of The Law of Conservation of Mass. 30g and 30g adds to 60g.

And the given reaction forms MgO only.

Hope it helps.
Please mark as brainliest.

Answer 2

Answer:

option -a is right

mark as brainliest