Although bismuth-209 is now known to be unstable, it has classically been considered to be a stable isotope because it has a half-life of over 1.9Ã10 19 years, which is more than a billion (1000 million) times the age of the universe.ismuth (Bi) has no stable isotopes, but does have one very long-lived isotope; thus, the standard atomic mass can be given as 208.9803987(16) u.
Following through on his State of the Union pledge, President Barack Obama has signed an Executive Order raising the minimum wage for workers on new federal contracts to $10.10 per hour. The rate increase will apply only to solicitations and contracts issued on or after January 1, 2015.
And the average worker in this larger group provides fully half of his or her family income. Let me say that again. The average worker whoâd be affected by President Obamaâs proposed increase in the minimum wage from $7.25 to $10.10 per hour is currently responsible for half of his or her familyâs income. By definition, thatâs not âpin money,â and it isnât money being saved up to purchase a pre-owned Dodge Caliber.