How you're going to answer this question is by doing a mole t - chart first you're going to put 2.40 mol of C8H18 opposite of the mol then you're going to find o2 which 256 on the bottom then multiply across to get the answer.
Hope this help, message me if you need more help
Actually its the second and fourth one for sure! If you just put one it only gives parcel credit. ;-;
Polyatomic ion: a covalently bonded group of atoms that has a positive or negative charge and acts as a unit.
Answer:
A. 2 protons, 2 electrons, and 1 neutron .
Certain naturally occurring radioactive isotopes are unstable: Their nucleus breaks apart, undergoing nuclear decay. ... All elements with 84 or more protons are unstable; they eventually undergo decay. Other isotopes with fewer protons in their nucleus are also radioactive.
