Given that the molar mass of NISO,-nH,0 is 262.89 g/mol, what is the value of n? [Molar mass (g/mol): Ni = 58.7, S = 32.07, o = 16.00, and H = 1.008] O a. 5 O b. 4 O c.6 o d. 7 Question 19 In acid base titration, what solution usually goes in the burette? Not yet answered Marked out of O a. 2.00 Base P Flag question Ob. Water O C. Acid Od. Indicator Question 18 The end point of a titration involving the reaction of MnO, to Mn2+ can be detected by Not yet the answered Marked out of 2.00 P Flag question O a. Addition of an indicator like phenolphthalien Ob. Use of litmus paper Oc. Purple color of the MnO," disappearing Od. Use of pH meter