1 kPa = 0.00986923 atm
∴ 886 kPa × 0.00986923 atm/ 1 kPa ≅ 8.74413778 atm
we are given our known measurements in 3 sig figs... so...
--> 886 kPa ≅ 8.74 atm
1 atm = 760.0 mmHg
∴ 8.74 atm × 760.0 mmHg / 1 atm ≅ 6642.4 mmHg
(again, 3 sig figs means...)
---> 886 kPa ≅ 6.64 × 10³ mmHg
Hope this helps!! ^_^
