The density of oxygen gas is 1.429 × 10–3 g/cm3 at standard conditions. what would be the percent error of the average of two separate experimental determinations measuring 1.112 × 10–3 g/cm3 and 1.069 × 10–3 g/cm3? (to solve this problem, average the two readings before calculating the percent error.)

0.034%

Explanation:

First, let's calculated the average density (da) of the two experimental, which the sum of them divided by 2:

da = 1.090x10⁻³ g/cm³

The relative error is given by the difference of the correct value and the avarege, divided by the correct value:

e = 3.39x10⁻⁴ x 100%

e = 0.034%

the answer is 1 i believe