Mass number minus the atomic number equals the number of neutrons. Mass number is the number of particles in an atom that have significant mass. Electrons are assigned a valâ¦ue of 0 since the mass is so much smaller than protons and neutrons. Protons and neutrons are similar in mass and are assigned mass number of 1.
Why Uber is losing so much money? The biggest part of the problem is that Uber is a relative small fish in the market and is not getting nearly enough customers. According to analyst reports, as of August 2015, Didi Kuaidi completed seven million rides as opposed to Uber's one million.
Based on market capitalization data pulled today, Uber is now more valuable than 359 of the 469 publicly-traded companies on the Fortune 500, or about 77% of them. (That figure decreases to 72% if we add the 21 privately-held companies on the list.