The answer which defines exothermic reaction is
a process in which energy is released as heat ( answer A)
<u><em>Explanation</em></u>
Exothermic reaction is a chemical reaction in which energy is released into environment in form of heat.
<u> For example of exothermic reaction</u>
Is a combustion reaction such as lighting a candle whereby oxygen react with wax to produce carbon (iV) oxide, water and heat.
The Periodic Law
Dmitri Mendeleev developed own periodic law with atomic number as the basis for the arrangement. The Periodic Law, also known as "Mendeleev's Law" states, " When elements are arranged in order of increasing atomic mass, certain sets of properties recur periodically." It also describes the properties of the elements as periodic functions of their atomic weights.
A 58.8
If you divide 78.4 by 4 and multiple it by 3, you get 58.8 moles.
Answer:
True
Explanation:
Because it would be false That Caves and caverns are common in dry regions where these is a layer of limestone near the surface.
Global warming, Cosmic Background radiation (even though most is blocked not ALL), and pollution.
