The element oxygen consists of three naturally occuring isotopes: 160, 17O, and 180. The atomic mass of oxygen is 16.0 amu. What can be implied about the relative abundances of these isotopes? O The abundances of 170 and 180 are very small. O The isotopes all have the same abundance, i.e. 33.3%. O Almost all O atoms are 18O. O More than 50% of all O atoms are 1o. O Almost all O atoms are 17O. Quiz saved at 9:30pm Submit Quiz Address rch

The element Cellphonium (Ce) has an atomic number of 115. Its isotope 215Ce (Cellphonium - 215) would thus have: O 115 protons, 115 neutrons & 100 electrons. 115 protons, 100 neutrons & 115 electrons O 130 protons, 100 neutrons & 100 clectrons O 15 protons, 100 neutrons & 15 clectrons 100 protons, 15 neutrons & 100 clectrons Nex « Previous

Bromine has two isotopes, Br-79 and Br-81. Their abundances are 49% and 51%, respectively. Chlorine also has two isotopes, Cl-35 and Cl-37. How many different Cl–Br molecules are possible?

There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.63%. Now that you have the contribution from the X-19 isotope (2.780) and from the X-21 isotope (17.93), what is the average atomic mass (in amu) of this element using four significant figures? ►

The average atomic mass of lithium is 6.925 amu. Lithium has two natural isotopes. The larger one has a 92.5% abundance and is 1 u larger than the smaller isotope. Dtermine the isotopes.

Gallium is a metal which forms compounds with a wide variety of uses. Some of the applications of gallium compounds include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors. Naturally occurring gallium consists of two isotopes. One of those isotopes is 71Ga with an isotopic mass of 70.9247050 amu and an abundance of 39.892%. What is the mass number of the other isotope?

A fictitious element Z has an average atomic mass of 223.67 u.223.67 u. Element Z has two naturally occuring isotopes. The more abundant isotope has an exact mass of 224.29 u224.29 u and a relative abundance of 60.99%.60.99%. Calculate the exact mass of the second isotope.

A new element is discovered and has three stable isotopes. The atomic weight of the element is 269.7374 amu. Isotope X-268 has a measured mass of 267.9086 amu and an abundance of exactly 0.2 (infinite sig figs) Isotope X-272 has a measured mass of 271.8937 amu and an abundance of exactly 0.45 (infinite sig figs)   What is the mass (in amu) of the other isotope?   Report to the ten thousands place (4 decimal places)

An unknown element is a mixture of isotopes 120X and 122X. The average atomic mass of X is 121.03 amu. What is the percent abundance of 122X?

12.)  Potassium (atomic mass= 39.10 amu) has three isotopes with masses 38.9367 amu, 39.9640amu, and 40. 9618 amu. The abundance of the last isotope is 6.73%. Estimate the abundances of the other two isotopes.