The diagram below shows the positions of the earth, moon, and sun. what is the date?

a) march 21
b) june 21
c) september 23
d) december 21

What forms when chemical reactions combine pollution with sunlight?

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

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.