Question

When 3.0 g of magnesium is burnt in 2.00 g of oxygen, 5.00 g of magnesium oxide is produced. What mass of magnesium oxide will be formed when 3.00 g magnesium is burnt in 5.00 g of oxygen? Which law of chemical combination will govern your
answer? State the law.​

Answer 1

8.00 g

The law of conversation of mass

Explanation;

When magnesium burns in the air it combines with oxygen to form magnesium oxide the

mass of the product is the mass of the magnesium oxide.

The mass of the reactant is the mass of the magnesium + mass of oxygen

:since matter cannot be created or destroyed according to the law of conservation of mass,

Mass of magnesium oxide formed = mass of magnesium reacted + mass of oxygen

=3.00 g + 5.00 g

=8.00 g


Hôpê thîš hêłpš ÿôû ✌

Answer 2

Explanation:

A simple explanation would be

THE LAW OF CONSERVATION OF MASS

According to which mass can neither be created nor be destroyed so in the above question- Mass of mg (3g)+ Mass of oxygen (5g) =MAGNESIUM OXIDE (MgO) (8g)

h Hope this helps Aashika you aren't active these days or may be me ......Haha btw im gonna ask lotta ques coz tis my xams soon be ready to help

-Yash