Asmall quantity of the inert gas argon (ar) is added to incandescent light bulbs to reduce vaporization of tungsten (w) atoms from the solid filament. what volume of argon gas measured at 760 mmhg is needed to fill a 0.21-l light bulb at a pressure of 1.30 mmhg? assume the argon gas temperature remains constant.

The first element on the periodic table of elements is carbon. a. true b. false

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397