Don't see how "Little amounts of energy generated " is a cost, more of a less benefit. Harnessing tidal energy will by virtue of conservation of energy take energy out of the tidal system, so B
The answer is 55 because if you run 3 it is the opportunity of a life time like if you read this
The answer is Acid
Explanation:
It's acid, because from its definition we can say that acid turns blue litmus paper red, and it is also corrosive and has a sour taste.
- Coming to the pH scale, which is a measure of the acidity and alkalinity of s substance.It is said to be acidic between the range of 1 - 6.9 and neutral at 7, and alkaline between the range of 7.1 - 14
Taking into account the reaction stoichiometry, 2.405 moles of NaCl are formed when 127.49 grams of Na₂CO₂ reacts with excess of FeCl₃.
<h3>Reaction stoichiometry</h3>
In first place, the balanced reaction is:
2 FeCl+ 3 Na₂CO₂ → Fe₂(CO₃)₃ + 6 NaCl
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
- FeCl: 2 moles
- Na₂CO₂: 3 moles
- Fe₂(CO₃)₃: 1 mole
- NaCl: 6 moles
The molar mass of the compounds is:
- FeCl: 91.3 g/mole
- Na₂CO₂: 106 g/mole
- Fe₂(CO₃)₃: 291.7 g/mole
- NaCl: 58.45 g/mole
Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
- FeCl: 2 moles ×91.3 g/mole= 182.6 grams
- Na₂CO₂: 3 moles ×106 g/mole= 318 grams
- Fe₂(CO₃)₃: 1 mole ×291.7 g/mole= 291.7 grams
- NaCl: 6 moles ×58.45 g/mole= 350.7 grams
<h3>Mass of NaCl produced</h3>
The following rule of three can be applied: if by reaction stoichiometry 318 grams of Na₂CO₂ form 6 moles of NaCl, 127.49 grams of Na₂CO₂ form how many moles of NaCl?
![moles of NaCl=\frac{127.49 grams of Na_{2} CO_{2} x6 moles of NaCl }{318grams of Na_{2} CO_{2} }](https://tex.z-dn.net/?f=moles%20of%20NaCl%3D%5Cfrac%7B127.49%20grams%20of%20Na_%7B2%7D%20CO_%7B2%7D%20x6%20moles%20of%20NaCl%20%7D%7B318grams%20of%20Na_%7B2%7D%20CO_%7B2%7D%20%7D)
<u><em>moles of NaCl= 2.405 moles</em></u>
Then, 2.405 moles of NaCl are formed when 127.49 grams of Na₂CO₂ reacts with excess of FeCl₃.
Learn more about the reaction stoichiometry:
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