Draw the best Lewis structure of [(CH3)3O]+; fill in any nonbonding electrons. Calculate the formal charge on each atom other than hydrogen. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and any nonzero formal charges.

Following are the solution to this question:

Explanation:

For

Please find the attachment.

Calculating the formal charge

Formal charge on

Similarly, the formal charge on all carbons atoms is = 0

The formal charge on O atom:

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2