We were the first club in the field of chemistry and happy to say we are still the best. Although recently had a few troubles, things are back on track.
This club welcomes members to exchange ideas on the latest or oldest developments in chemistry. Voice your queries and we will help find the answers. Post your ideas and we'll talk about them. We do anything Chemistry!
So from Beginners to Professors, or people who just have a passion for Chemistry, our club is for people on all levels. So don't feel shy, post what you want to ask. The worst you can do is learn...
Hi, The answer I got is 435.3 nm. Brian, you forgot to multiply by the speed of light and I think your factor of 10 should be (3 - 23 - (-34) + power for speed
    http://www.astronomynotes.com/light/s3.htm Energy of light = h × f where h is a universal constant of nature called ``Planck's constant'' = 6.63 ×
The energy required to dislodge electrons from sodium metal via the photoelectric effect is 275 kJ/mol. What wavelength in nm of light has sufficient energy