Wana help me on this doubt of chemistry. I would be gratefully.
I will make you brainlist if you give me all of these answer.​

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity