Answer:

Step-by-step explanation:
The mass of KI required can be found by using the formula:
m = c × M × v
where:
c is the concentration in M , mol/dm³ or mol/L
v is the volume in L or dm³
m is the mass in grams
M is the molar mass in g/mol
From the question:
c = 0.255 M
v = 5.60 L
Molar mass( M) of KI = 166 g/mol
