Food code is like sort of a guide to ensure that the food is presented according decent standards, unadulterated and correctly presented to the customer.
It is published every four years by the " U.S Food and Drug Administration".
Answer:
Explanation:
Chemical potential energy is the chemical energy stored (or property) of a substance. One chemical potential energy of wood is combustion. Combustion involves the burning of a substance in excess oxygen (in this case open air). <u>The chemical energy stored here is transformed to thermal/heat energy after combustion due to the large amount of heat evolved/produced</u>.
NOTE:
The model above also that combustion is an exothermic reaction because it involves the release of heat into it's surrounding.
Answer: 
Explanation:
According to Bronsted and Lowry an acid is a proton donor and base is a proton acceptor.
Therefore, the equation for the reaction will be as follows.

Here,
acts as a base as it is accepting a proton and
acts as an acid because it is donating a proton.
Molarity is defined as number of moles of solute dissolved per litre of solution.
M is the symbol used for it.
unit is= mol/ Litre Given:
Moles of solute KCl is 5
volume of solution is 2L
Calculation:
Molarity= Moles of Solute/ volume M= 5/2= 2.5 mol/L