Why do lakes only freeze at the surface? a

more dense water rises to the top
B more dense water sinks to the bottom
Cthe coldest water sinks to the bottom

D the warmest water rises to the top
Plz hurry thank you

Calculate the number of moles of ethane in 100 grams

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

How does the attraction between particles affect the ability of a solvent to dissolve in a substance