in an experiment to determine density , students were measuring mass and volume. They found the mass of their substance to be 8.12 g and the volume to be 1.9 cm 3. The actual density was 4.5 g/cm 3. what was their percent error?

4.4%

Explanation:

Percent error is a value used to determine the accuracy of a measurement. The formula is:

% error = |Actual - Measure| / Actual * 100

The density determined by the students is:

8.12g / 1.9cm³ = 4.3g/cm³

Percent error is:

|4.5 - 4.3| / 4.5 * 100

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.