The reactions based on the absorption and release of the energy are called endothermic and exothermic reactions. The reaction is exothermic.
<h3>What is an exothermic reaction?</h3>
Exothermic reactions are the reaction in which the reactant produces products that release energy from the system to the surroundings. In the reaction bond energy of the reactant is less than the product.
Energy from the system is released in the form of heat, sound, light and electricity. The weak bonds of the compounds are replaced with stronger ones and the standard enthalpy of the reaction is negative.
Therefore, option c. reaction is exothermic is correct.
Learn more about the exothermic reactions here:
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Answer:homogeneous mixture
A sandstorm is a homogeneous mixture.
Explanation:
It is make the molecule polar.
Answer:
Methane is a covalent bond. Methane is a chemical compound from the bonding one carbon atom and for hydrogen atoms. Although electronegativity increases as you go right of the periodic table, hydrogen has an electronegativity of 2.20. Chlorine has an electronegativity of 2.55. There difference in electron negativity (0.34). Therefore it is a non polar compound. If there difference was much greater, than they would form a ionic bond. Alkali metals tend to form the most ionic bond, but although hyrdogen is placed with them, it has a higher electronegativity so hydrogen is an exception.
Carbon has 4 valence electrons so it will want to gain 4 more electrons to become stable (Octet rule). Hydrogen has 1 valence electron, so it will want to lose it to become stable. Therefore, one carbon atom takes 1 electrons from 4 hydrogen atoms.
Boyle's Law states that: the Pressure of a fixed mass of gas is inversely proportional to its volume, if its temperature is kept constant.
In the process of breathing-in, our chest grows slightly and the rib
cage kindoff gains in size(and volume), and so the air inside our lungs
occupy a larger space(volume).
This increase in volume causes the Pressure of the air inside our
lungs to become smaller than the pressure outside( in the atmosphere
around). So, air is pushed in due to the pressure difference that results.
When you breathe out, the reverse happens. Your rib cage(and lungs)
contract and so the air in them has a smaller volume. And so, the
pressure increases.
This time the pressure difference is towards the outside. And so, air is pushed out!
