Answer:
Lake Treatment
Explanation:
Sulphuric dioxide produced by industries and released into the atmosphere returns as acid rain or sulphuric acid. In lakes impacted by acid rain, such as in Ontario, Canada, the application of alkalis dropped by airplanes can control and neutralize the water's pH level.
First and fifth reaction shows endothermic reaction while the rest of it shows exothermic reaction.
<h3>What reaction shows exothermic and endothermic reaction?</h3>
The reaction between ammonium nitrate and water is an example of endothermic reaction because it absorbs heat from the surrounding environment.
Three drops of concentrated sulfuric acid added to 100 milliliters of water in a beaker makes the beaker hot because exothermic reaction occur.
Ammonium chloride dissolved in a beaker of water makes the beaker cold which shows that it is exothermic reaction because heat leaves the solution.
Uranium atoms are split to produce nuclear energy is an example of exothermic reaction.
Water separates into hydrogen and oxygen when an electric current is run through it that shows endothermic reaction.
Methane and oxygen are combined to produce methanol and heat is an example of exothermic reaction.
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In an acidic solution, the concentration of H+ is greater than the concentration of OH-. The pH will be less than 7.
In a basic solution, the concentration of OH- is greater than the concentration of H+. The pH will be greater than 7.
In a neutral solution, the concentration of H+ ions to OH-ions will be equal, and will therefore have a pH of 7. (This is due to water autoionization, which we usually ignore because it is small in other circumstances.)
Answer:
8 molecules of C₂H₄Cl₂
Explanation:
Molecules of C₂H₄ = 15 molecule
Molecules of Cl₂ = 8 molecules
Molecules of C₂H₄Cl₂ =?
First of all we will write the balance chemical equation,
C₂H₄ + Cl₂ → C₂H₄Cl₂
we are given 8 molecules of Cl₂ and 15 molecules of C₂H₄, which means that 8 molecules of chlorine react with 8 molecules of C₂H₄ and will limit the reaction product. The seven molecules of C₂H₄ will remain unreactive. So , the chlorine will be the limiting reactant.
8 molecules of Cl₂ × 1 mole of C₂H₄Cl₂/ 1 mole of Cl₂
8 molecules of C₂H₄Cl₂