How is a barometer useful in predicting the weather? A) It measures changes in temperature.

B) It measures changes in air pressure.

C) It measures changes in the wind speed.

D) It measures the direction of the wind.

A 200. mL balloon of helium gas has a temperature of 293K. What is the temperature of the helium balloon if the volume expands to 600. mL? a 879 mL b 60.0 mL c 273 mL d 410. mL

How many grams of Cl2 are in 1.20 x 1024 Cl atoms?

Which characteristics made Priestley and Lavoisier good scientists? Check all that apply. A. curiosity B creativity C narrow mindedness D skepticism

An interglacial is a period of time that occurs between Ice Ages. It's marked by warmer temperatures and milder climates. During previous interglacials, the CO2 levels in the atmosphere were about 280 parts per million (ppm).

Some processes that occur in a cell are listed below. A. utilize energyB. detect changes in the environmentC.

When does raising the temperature of a gas increase its pressure? A. temperature B. volume C. number of particles D. pressure

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed