Which statement is an example of diffusion Answer
(A) A kitchen towel soaks up some split milk
(B) ice cream melts in a warm room
(C) pollen from flowers is blown by the wind
(D) the smell of cooking spreads through a house ​

Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning