Is testing for fingerprints on a door a physical or chemical change

Chlorine plus lithium bromide

Which statement describe a species adapting to changes in it's environment?

What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams os solute?

How many neutrons does the following nuclide have? 253/100 Fm A. 253 B. 100 C. 153 D. none of these

Jim, Jill, Robert, and Kim each run paper chromatography on an unknown aqueous mixture. Jim gets a red band and a blue band, Jill gets a yellow band and a blue band, Robert gets a green band, and Kim gets a red band and a yellow band.

What is the nearest star in Gemini

In order for a solute to dissolve in a solvent, what must be true?

Radiocarbon dating can be used to determine the age of A a sample less than a million years old B a sample less than 100,000 years old C a sample less than 50,000 years old - D a sample less than five million years old

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

Could the two aqueous solutions be identified through a visual inspection? Explain.