The brain and the spinal cord
To convert the given number of moles of aluminum to grams, we need to use the molar mass of the element as the conversion factor. Aluminum has a molar mass of 26.981 g/ mol. The answer to this problem is b. <span>fraction: 26.981 g Al over one mol Al. </span>
You should be careful to remember that iodine and fluorine cannot be introduced into an aromatic ring by the method used for bromine and chlorine. On its own, iodine is unreactive with aromatic rings, but one method for aromatic iodination is treatment in the presence of a copper salt such as copper(II)chloride where I2 is oxidized to the more electrophilic species I+.
Answer: The coefficient for water after the equation is balanced is 2.
Explanation:
The balanced chemical equation must have same charge and same number of atoms on both sides of the equation.
As the given reaction is a redox recation occuring in acidic medium.
![HNO_3+3Fe^{2+}+3H^+\rightarrow NO+3Fe^{3+}+2H_2O](https://tex.z-dn.net/?f=HNO_3%2B3Fe%5E%7B2%2B%7D%2B3H%5E%2B%5Crightarrow%20NO%2B3Fe%5E%7B3%2B%7D%2B2H_2O)
The coefficient for water will be 2 after the equation is balanced.