Level Burette Readings cm3 CBR X cm3 Standard Deviation Amount of NaNO2 found  1 2 3 Final 7.60 7.60 7.60 7.60 0.00 1.058 g Initial 0.00 0.00 0.00 Difference 7.60 7.60 7.60

Table 3b: Burette readings. For sodium nitrite: Pilot Reading: 7.00 to 8.00 cm3