Aluminum, carbon, and calcium are examples of what type of matter? a)element b)heterogeneous mixture c)solution d)compound

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

What are the first three quantum numbers for the electrons located in subshell 2s?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum