Determine the frequency in Hz if the wavelength of a light wave is 765nm. (Note: speed of light in vacuum (c) is 3.0 x108 m/s or 3.0 x 10^8m/s or 3.0 E8 m/s and
1m = 1x109 nm) [3]

If a solution had a ph of 7 what is the solution

All forces cause motion? true or false

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?