The following data were obtained for the analysis of a standard soil sample containing the analyte acenaphthene, a known carcinogen. The concentration of acenaphthene in the sample is given as 3.2 ppb. Determination Acenaphthene ppb. which one
of the following points can be rejected at the 95% level by the Q test? (Qcrit=0.829)​

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.