Haze is caused by particulate matter from incomplete combustion of car, truck, bus, burning of gasoline and diesel. This could also be caused by the buning of wood, coal, and heating oils from industry, electical generation plants that do not collect some of the pollutants at the smoke stack or exhaust points.
Answer is: A. adding heat to the product mixture.
Balanced chemical reaction:
CO(g) + 3H₂(g) ⇄ CH₄(g) + H₂O(g); ΔH = -206.1 kJ.
This reaction is exothermic, which means that heat is released.
According to Le Chatelier's principle when the reaction is exothermic heat is included as a product and when the temperature increased, the heat of the system increase, so the system consume some of that heat by shifting the equilibrium to the left.
Answer: The pH of the substance is 8.25. The solution is basic.
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydronium ion concentration. The acids have pH ranging from 1 to 6.9 , salts have pH of 7 and bases have pH ranging from 7.1 to 14.
Putting in the values:
![pH=-\log[5.6\times 10^{-9}]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5B5.6%5Ctimes%2010%5E%7B-9%7D%5D)
![pH=8.25](https://tex.z-dn.net/?f=pH%3D8.25)
Thus as pH is more than 7, the solution is basic.
The pH of the substance is 8.25. The solution is basic.
Answer:
The molarity is 3.42 ![\frac{moles}{liter}](https://tex.z-dn.net/?f=%5Cfrac%7Bmoles%7D%7Bliter%7D)
Explanation:
The molarity reflects the concentration of a solution and indicates the number of moles of solute per liter of solution. In other words, the molarity (M) is the number of moles of solute that are dissolved in a given volume.
The Molarity of a solution is determined by the following formula:
![Molarity (M)=\frac{number of moles of solute}{volume}](https://tex.z-dn.net/?f=Molarity%20%28M%29%3D%5Cfrac%7Bnumber%20of%20moles%20of%20solute%7D%7Bvolume%7D)
Molarity is expressed in units (
).
To know the amount of moles of solute (NaCl) you must know its molar mass. If:
- Na: 23 g/mole
- Cl: 35.45 g/mole
the molar mass of NaCl is: 23 g/mole + 35.45 g/mole= 58.45 g/mole
Now you apply a rule of three as follows: if 58.45 g of NaCl are present in 1 mole, 10 grams of the compound in how many moles are they?
![moles=\frac{10 g*1 mole}{58.45 g}](https://tex.z-dn.net/?f=moles%3D%5Cfrac%7B10%20g%2A1%20mole%7D%7B58.45%20g%7D)
moles= 0.171
Then:
- number of moles of solute: 0.171 moles
- volume= 50 mL= 0.05 L (being 1 L=1000 mL)
Replacing in the definition of molarity:
![Molarity=\frac{0.171 moles}{0.05 L}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7B0.171%20moles%7D%7B0.05%20L%7D)
Molarity= 3.42 ![\frac{moles}{liter}](https://tex.z-dn.net/?f=%5Cfrac%7Bmoles%7D%7Bliter%7D)
<u><em>The molarity is 3.42 </em></u>
<u><em></em></u>
The correct answer is - natural gas.
The natural gas is the fossil fuel that releases the least amount of carbon dioxide in the atmosphere. It actually releases very little to none. The reason for that is that the natural gas is a fossil fuel which has the methane as its main ingredient. Even when used, it is not causing some serious pollution, instead the pollution comes from not well managed infrastructure and movement from one place to another of the natural gas. The biggest problem, pollution wise, comes from the leaking of the natural gas, when methane is released into the atmosphere.