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Which statement best explains why heating a liquid affects its viscosity? 1.) The molecules move faster at higher temperatures and overcome attractions more easily. 2.

A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O. Calculate the mass percent compositions of C, H, and O in aspirin.

If you mechanically shook a mixture of phospholipids and water, what would you expect to see when you observe the solution using an electron microscope?

Why must chromosomes be copied before cells divide

A certain shade of blue has a frequency of 7.26 * 1014 Hz. What is the energy of exactly one photon of this light?

Calculate how many moles of glycine are in a 160.0-g sample of glycine. express your answer using four significant figures.

Which of the following words correctly describes CO2? Select all that apply A. Its a substance b its a compound c its a element D its a mixture

A certain reaction has an activation energy of 51.64 kj/mol. At what temperature Kelvin will the reaction be 5.50 times faster than it did at 343K?

What allows electrons to flow between electrodes in an electrochemical cell? a - conducting wire b - salt bridge c - electrolyte solutions d - battery

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? 1 mol of oxygen has fewer molecules. 1 mol of oxygen has more molecules. Each sample has the same number of molecules.