The heated soup moves to the tip by convection
Answer: 0.0345 sec
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
![Rate=k[H_3PO_4]^2](https://tex.z-dn.net/?f=Rate%3Dk%5BH_3PO_4%5D%5E2)
k= rate constant = 
Expression for rate law for first order kinetics is given by:

where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
for completion of 20 % of reaction



The time taken for the concentration of
to decrease to 20% to its natural value is 0.0345 sec
3O2 is a reactant in this equation
Hey there!
An energy level is the level of energy that the particle has.
Electrons occupy energy levels.
To release electromagnetic radiation, an electron will absorb energy, jump up an energy level, then releases the energy in the form of a photon and goes back down to its original energy level.
Hope this helps!