A teacher makes the following statement. "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C." What topic is the teacher most likely talking about?
distillation of a mixture
filtration of a pure substance
evaporation of a mixture
sorting of a pure substance

distillation of a mixture

Explanation:

Distillation is a process that is used to separate mixture of different liquid substances based on the boiling points of each of the substances in the mixture.

For example, a mixture containing alcohol (ethanol) and water can be separated by boiling the mixture at a slightly high temperature till all the ethanol evaporates off. Ethanol has a boiling point of while pure water boils at . The ethanol evaporates off at (and can be collected in a chamber) while the water remains.

Hence, the teacher was most likely talking about distillation of a mixture.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.