A student investigates an ideal gas in a rigid container and produces a pressure-versus-temperature graph. Extrapolating the best-fit line to zero pressure gives a temperature intercept of −285∘C. What is the percent error of this experimental value compared with the accepted value of absolute zero (–273 °C)?
a) 12%
b) 3.5%
c) 4.4%
d) 8.8%