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.
The Federal Minimum Wage was last raised to $7.25 per hour in 2009 from the previus minimum wage rate of $6.55.The Minimum Wage is raised by an act of Congress, and has no set schedule, but is generally raised every 3-7 years in response to rising inflation and cost-of-living.irstly, it's common for the minimum wage to remain the same for as long as 7-8 years before it is raised again. The Minimum Wage has only been $7.25 since 2009. Second, raising the Minimum Wage is a controvertial subject for politicians because it hurts businesses.