4. A sample of Dicoumerol was analyzed and determined to contain 0.739 g of carbon, 0.0415 g of hydrogen and 0.219 grams of oxygen. Calculate the percent composition.

The element that has the greatest electronegativity is

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm