Please do not skip any step solution, and please write the solution step on one piece of paper without use type by using the computer. This is because I scare I will not understand the concept. Thank you very much.

Question 3 (8 marks) The following question concerns the Period 2 elements. (a) Write the conjugate acid for the followings Conj. Acid 1 HAPO 11. NO2 III HS IV OH V HO 15 marks] CEE2000 Engg. Chemistry_Test Sem 1 2022 2 (b) A 5.00 g sample of lithium, containing the two isotopes lithium-5 and lithium-7, was found to contain 0.375 g of the isotope lithium-6. Isotope Relative isotopic Mass Lithium-6 6.015 Lithium-7 7.016 Calculate the relative atomic mass of lithium for this sample. Give your answer to an appropriate number of significant figures [3 marks]