Is a humidifier putting moisture in the air a physical change

There are 3 type of polar bear one with thick coat one with thin and one with medium which polar bear will not benefit from natural selection

Over the last 100 years the number of lives lost during major storms like hurricanes has steadily dropped what could be concluded as the primary reason for this decrease

Explain why two thin sweaters feel warmer then one thick sweater

A solution is observed to have a sour taste, it turns litmus paper a pinkish/red color, and is corrosive to living tissue. Which relationship between ions shown below is correct for this solution? A.) [H'] > [OH'] B.) [H') <[OH'] C.) [H] = [OH) D.

A manufacturer of echo effects for music recording studios has built a prototype of an echo device that sounds exactly like a beloved echo machine from the 1970s.

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?

The suffix "-megaly in the term gastromegaly means: