Html viewer was selected to open .htm files and that would not handle mailto: and other links. This app reset that and then next time I opened the file it asked what app to use and I could select Browser (or Chrome). Perfect. At times, I want to use Chrome to open an .html file that I put on my tablet.
Neutrons have a mass of 1.675 Ã 10-24g, which is a little heavier than the proton. Neutrons are 1839 times heavier than electrons. Like all hadrons, neutrons are made of quarks. A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3.
A hydrogen nucleus is a proton, and the mass of a proton is 1.67Ã10â27kg. The most recent value for the radius of a proton is 8.41Ã10â16m. The mass of a hydrogen atom is 1.67Ã10â27kg. The radius of a hydrogen atom, calculated using self-consistent field functions, is 53 pm or 53Ã10â12m. V=(43)Ïr3=(43)Ï(53Ã10â12m)3=6.24Ã10â31m3. Ï=mV=1.67Ã10â27kg6.24Ã10â31m3=2.7Ã103kg/m3=2.7 kg/dm3.