Enumerate the changes that takes place in liquid during Evaporation?

Instructions:Select the correct answer. If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent? 2KNO3 + 10K 6K2O + N2

The molecules of a gas at constant volume are somehow given a lower average kinetic energy. What two measurable properties of the gas will change and in what direction?

Wave a and b have the same speed, but wave a has a shorter wavelength. which wave has the higher frequency? explain how you know

Which gas would have the slowest rate of diffusion, assuming that all gases are at the same temperature? krypton (atomic mass 83.8 amu) argon (atomic mass 39.95 amu) xenon (atomic mass 131.3 amu) radon (atomic mass 222 amu)

Suppose that you stir a green powder into a clear liquid. The liquid turns green. You leave the room and come back later to observe that the top of the liquid is clear again. A green substance has settled on the bottom of the container.

What is one way to speed up a chemical reaction without otherwise affecting the reaction? a. add a catalyst b. decrease surface area c. change the products d. change the reactants

Why is halleys comet part of our solar system?

Fluorine-18, which has a half-life of 110 min, is used in PET scans. a. If 100. mg of fluorine-18 is shipped at 8:00 a. m., how many milligrams of the radioisotope are still active after 110 min? b. If 100. mg of fluorine-18 is shipped at 8:00 a. m.

The reaction of methane with water to form carbon dioxide and hydrogen is non - spontaneous at 298 k. at what temperature will this system make the transition from non-spontaneous to spontaneous? the data refer to 298 k.

The sedimentary rock formed when water deposits tiny particles of clay in very thin flat layers is called? a. gymsum b. shale c. limestone d. calcite