Given the following equation: 2AI + 6HCI = 2AICI3 + 3H2 if 3.00 grams of H2 were produced, how many grams of Ai reacted? (Note: The molar mass of AI = 26.98 g/mol, and molar mass of H2 = 2.016 g/mol.

Three sig figures, please.

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.