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 LHPO 1 IL NO IIL HS IV OH V H2O [5 marks) CEE20005 Enes Chemistry. Tout 1 Sem 1_2022 2 (b) A5.00 g sample of lithium, containing the two isotopes ithium-5 and lithium-7, was found to contain 0.375g 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]