An unknown element with atomic weight 125.8 amu has two isotopes. One isotope has an abundance of 51.97% at 125.6 amu. Find the mass of the second isotope.A. 126 B. 100 C. 148 D. 531 E. Over 9000
Chorline exists mainly as two isotopes 35Cl and 37Cl,a) Which is more abundant?b) How do you know?c) Compute the percentage of chlorine that is the 37Cl isotope.
There are two isotopes of Y, 50Y (mass 49.972 amu, abundance 24.93%), 52Y (mass 51.966 amu). The atomic mass of Y in amu is what?
What is the average atomic mass of silicon? Given the following data, calculate the average atomic mass of silicon.isotope = Si-28amu =27.9769abundance(%) =92.18isotope = Si-29amu =28.9765abundance(%) =4.71isotope =Si-30amu =29.9738abundance(%) =3.12
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
The two naturally occurring isotopes of bromine are 81Br (80.916 amu, 49.31%) and 79Br (78.918 amu, 50.69%). The two naturally occurring isotopes of chlorine are 37Cl (36.966 amu, 24.23%) and 35Cl (34.969 amu, 75.77%).Bromine and chlorine combine to form bromine monochloride, BrCl.What are the masses of the four different BrCl molecules? Express the masses in atomic mass units using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
How many electrons, protons, and neutrons does nitrogen-14 have? Is it an anion or cation?
How many neutrons are present in an atom of neon isotope, Ne-22? (atomic # 10)
What are the numbers of electrons, sequentially, in each of the following ions? Ca2+, Fe2+, I-, O2- a) 20e-, 26e-, 53e-, 8e-b) 18e-, 26e-, 54e-, 8e-c) 22e-, 28e-, 52e-, 6e-d) 18e-, 24e-, 54e-, 10e-e) 20e-, 20e-, 53e-, 8e-
How many protons, neutrons and electrons does the 56Fe2+ ion have?
Three isotopes of A (Isotope 1: 85.91 amu, 35.12%, Isotope 2: 86.91 amu, abundance 7%, Isotope 3: 87.91 amu) would have the atomic mass of what?
Gallium consists of 2 isotopes. One of those isotopes is Ga-71 with a mass of 70.92 amu with an abundance of 39.892%. What is the mass number of the other isotope?
Pretend that a new element with an atomic weight of 342.38 amu was recently discovered. This element has two isotopes, the lighter of which has a mass of 340.91 amu and an abundance of 68.322%. What is the mass of the heavier isotope? A) 348.67 B) 343.29 C) 345.55 D) 342.38 E) 350.21
Which of the following are isotopes of the following atom? 35 79X(a) 35 82X(b) 38 82X(c) 36 79X(d) 3567X
Enter your answer in the provided box.Element X has two naturally occurring isotopes, 65X (isotopic mass 64.7079 amu, abundance 57.16%) and 67X (isotopic mass 66.9328 amu, abundance 42.84%). Calculate the atomic mass of element X.
Which of the following sets represents a pair of isotopes? 14C and 14N 206Pb and 208Pb O2 and O3 32S and 32S2-
Which are isotopes of each other? Check all that apply.(a) 11850X(b) 12648X(c) 12549X(d) 12252X
Gallium has two naturally occurring isotopes with the following masses and natural abundances: Part ACalculate the atomic mass of gallium. Express your answer using five significant figures.
A carbon-12 atom has 6 protons, 6 neutrons, and 6 electrons. How many protons does a carbon-14 atom have?
Which of the following pairs represent (hypothetical) isotopes? A) A and BB) A and CC) A and DD) C and D
If there are 128 neutrons in Pb-210, how many neutrons are found in the nucleus of Pb-206?
Naturally occurring magnesium contains three isotopes, 24Mg, 25Mg, and 26Mg. The exact isotopic molar masses of each and their relative abundances are listed in the table below. Using this information, determine the molar mass of magnesium.