solution:
the change in the boiling point is given as,
dTbp =2.30°c
elevation constant for the solvent is given by,
kb=0.512°c/m

= 4.49m
H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the O. Water is a chemical substance with no smell, taste, or color.
The correct answer is:
Zinc and hydrochloric acid
Explanation:
Reactants are the opening materials in a chemical reaction. Reactants experience a chemical change in which chemical bonds are destroyed and new ones created to make products. In a chemical equation, reactants are posted on the left side of the arrow, while products are on the right side. If a chemical reaction has an arrow that points both left and right, then things on both sides of the arrow are reactants as well as products .And in above reaction Zinc and hydrochloric acid react and form zinc chloride.