4.84*10^-2 mol h2so4 to molecules h2so4

Number of molecules in 4.84 x 10^-2 mole of H2SO4 are :

molecules

Explanation:

Moles : It is the quantity which is equal to mass of the  substance which contain same number of units as present in 12 g of C-12.It is represented by "n"

It Contain Avogadro Number of Atoms .

The number of mole can be calculated :

Mole = 4.84 x 10^-2 mole

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e