pentane

"Gasoline is a hydrocarbon fuel used in many cars. "

"The science teacher conducted an experiment to demonstrate how plants grow in different types of soil. "

"The volatile quickly evaporated from the science experiment. "

"The program will run smoothly under these conditions: the computer has enough memory and the internet connection is stable. "

"Glucose and fructose are isomers; they both have the formula C6H12O6, but their atoms are arranged differently. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The computer technician fixed the broken printer in the school library. "

""Because it contains only carbon and hydrogen atoms arranged in a straight chain, that organic molecule is classified as an aliphatic." "

"The formula for calculating the area of a rectangle is length times width. "

"My dad uses propane to fuel the barbecue grill for our family cookouts. "

"The scientist studied the chemical composition of the soil sample. "

"We measured the temperature with a thermometer.   You should measure the angle with a spirit level."