Reflected shock waves allowed temperatures from 1230 to 1800 K and pressures from 7.3 to 9.5. atm to be obtained. These measurements have shown that cyclopentane is much less reactive than. cyclohexane, as for a given temperature the observed autoignition delay times were about ten times. higher for the C5 compound compared to the C6. Detailed mechanisms for the combustion of cyclohexane and cyclopentane have been proposed to.
Your Tax Dollars at Work. The average income in 2011 was $41,560. With this salary and a single filing status, you could expect to pay around $5,153 (12.4 percent of your earnings) in federal taxes, in addition to $2,577 (6.2 percent) toward Social Security and $603 (1.5 percent) toward Medicare.
Paying Social Security And Medicare Taxes. The Social Security tax rate for 1999 is 15.3 percent (the same as 1998) on self-employment income up to $72,600. If your net earnings exceed $72,600, you continue to pay only the Medicare portion of the Social Security tax, which is 2.9 percent, on the rest of your earnings.