x grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of x (in grams)?

x grams of calcium carbonate was completely burnt in air. The weight o

1.	x grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of x (in grams)?
Answer» 44 200 150 50 Answer :D