11) The laser in a laboratory in the physics department at UNC emits visible light with a frequency (v) of 4.9 x 1014 s-1.
(a) What is the wavelength (m) of this light?
(b) What is the energy of this light?
(C) What color might this wavelength of visible light be?

Forests and meadows are often cut down to make way for farms or large number of new homes. what are some of the elements of ecosystems that are lost when plants in these areas are removed?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.