calculate the wavelength of light in nm that has a the frequency of 1.24 × 10^15s –1 . The velocity of light is 3.00 × 10^8m/s.

How many miles of water are produced if 5.43 mol pbo2 are consumed

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.

How many moles are in 43.9 l of oxygen