What are groups of two or more atoms bonded together that function as a single unit?

What is the mass of one mole of Chromium atoms?

Receiving an electrical shock when you forget to turn off the power before working on an electrical socket is an example of a negative punishment. T/F

Which of the following is not a stimulus:hearing a loud noise, sneezing, touching a hot object, tasting a lemon?

What is the reaction that joins thousands of small, identical molecules to form one very long molecule?

An ore sample with a mass of 92.3 g is found to contain 17.7% by mass iron. What mass of iron is contained in the ore?

With the exception of a species that lives near the Florida coast, sea urchins are basically harmless to people. Which word is an adjective?

Will some one add me as a friend

1 mol of an Ideal Gas expands through a turbine adiabatically to produce work. Assuming steady flow conditions, how much work is lost due to the entropy generated, if the surroundings are at 300 K? Give the value of lost work to the nearest J.

According to Table N, which radioactive isotope is best for determiningthe actual age of Earth? (1) 238 U (3) 60 Co (2) 90 Sr (4) 14 C

If 10 moles of H2O are produced how many moles of CO2 are also produced.