Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature. Dana is testing alkanes to see how they boil. She first heats up alkanes with more carbon atoms, and then some with fewer. The alkanes with fewer carbon atoms have a boiling point, compared to the other, that is lower or higher?
higher

(Question)
The more efficient a device is, the greater the percentage of usable energy it produces. Theresa made a device that uses 25% of usable energy. Ryan made a device that uses 10% of usable energy. Theresa or Ryan made a device that is less efficient?
(Answer)
Ryan

Ques: The bigger the waves are and the more sediment they carry, the more erosion they cause. A part of the beach is rough, and another part is very smooth. The waves on the rough part of the beach are probably larger or smaller?
Ans: smaller

(Q).
Richer nations use far more energy resources, especially fossil fuels, than poorer nations do. Between the United States, the richest nation in the world, and the Democratic Republic of Congo, the poorest nation in the world, which uses less gasoline per capita, the people in the United States or the people in the Democratic Republic of Congo??
(A).
the people in the Democratic Republic of Congo?

Ques:In general, the farther away from the Sun, the greater the distance from one planets orbit to the next. When we look at the solar system planets are less far apart closer to the sun or farther from the sun?

Ans:closer to the sun

With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH. If Jim adds hydrogen ions to his solution, what will happen to the level of acidity it will become less acidic or it will become more acidic?
it will become more acidic