Explanation

Magnesium Sulphate (Epsom salt) is a common laxative that helps relieve constipation by drawing water into the intestines.

It works by softening stool and promoting bowel movements when taken in proper dosage.

Explanation

A neutral solution (pH 7) does not affect litmus paper, so both red and blue litmus remain unchanged.

Litmus paper changes color only in acidic (red) or basic (blue) solutions.

Explanation

When an acid reacts with a carbonate, it produces salt, water, and carbon dioxide as products.

A general reaction is:

Acid + Carbonate → Salt + Water + CO₂

Example: HCl + CaCO₃ → CaCl₂ + H₂O + CO₂

Explanation

According to the law of conservation of mass, the total mass of reactants equals the total mass of products in a chemical reaction.

Since no atoms are lost or gained, the mass of Fe₂O₃ (product) remains 320 grams, the same as the reactants.

Explanation

6CO₂ + 6H₂O → C₆H₁₂O₆ + 7O₂

The given reaction is the photosynthesis equation, where carbon dioxide and water form glucose and oxygen.

To balance oxygen atoms, the reaction requires 6 oxygen molecules (O₂), which contain 12 oxygen atoms on both sides.