A new element, element Tj, is discovered on a separate planet. The energy required to ionize one mol of Tj atoms is about 1600 kJ per mole. what frequency should 1 more of photons have in order to ionize 1 mole of Tj Adams?​

yes the answer is total mass in unchanged   : )

5 structural isomers

the isomers are:

n-exane :   ch3ch2ch2ch2ch2ch3

2-methylpentane :   ch3ch(ch3)ch2ch2ch3

3-methylpentane :   ch3ch2ch(ch3)ch2ch3

2,3-dimethylbutane :   (ch3)2chch(ch3)2

2,2-dimethylbutane :   (ch3)3cch2ch3