The answer that i got was three
i redid it and got some answer like 4.62 x1014<span> Hz</span>
The answer is C............
Black coffee since it is a darker colour and has a heavier taste
The number of atoms present, on average, will be the natural abundance of the isotope times the number of atoms in the sample => number of C-13 atoms = C-13 abundance * number of atoms in the sample = 1.07% * 30,000 = 1.07 * 30,000 / 100 = 321 atoms.<span> Answer: 321 atoms.</span>
