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?

Silicon (average atomic mass=28.0855amu) has three isotopes. Their masses are 27.9769amu, 28.9765amu, and 29.9738amu. The abundance of the heaviest isotope is 2.96%. Estimate the abundances of the first two isotopes.

How many carbon atoms are there in a 2.7-carat diamond? Diamonds are a form of pure carbon. (1 carat = 0.20 grams) Express the number of atoms to two significant figures. IVE ΑΣΦ N = ? carbon atoms

The element lead consists of four naturally occurring isotopes with atomic masses 203.97302, 205.97444, 206.97587 and 207.97663 u. The relative abundance of these four isotopes are 1.400, 24.10, 22.10 and 52.40 % respectively. From these data, calculate the atomic weight of lead.

A fictitious element only has two naturally occurring isotopes: X and Y. If isotope X has a mass of 132.5 amu and a percent abundance of 44.4%, what is the mass in grams of 6.09×1023 atoms of isotope Y given that the average mass of the element is 136.2 amu?

On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u) 74.200% 45.95263 15.100% 47.94795 10.700% 49.94479 Isotope 46 Ti 48 Ti 50 Ti What is the average atomic mass of titanium on that planet? average atomic mass= x10 TOOLS u

A 5.93 g sample of calcium sulfide was decomposed into its constituent elements, producing 3.30 g of calcium and 2.63 g of sulfur. Which of the statements are consistent with the law of constant composition (definite proportions)? Every sample of calcium sulfide will have 3.30 g of calcium. The ratio of calcium to sulfur will vary based on how the sample was prepared. The mass percentage of calcium plus the mass percentage of sulfur in every sample of calcium sulfide equals 100%. The mass ratio of S to Ca in every sample of calcium sulfide is 0.80. Every sample of calcium sulfide will have 55.6% mass of calcium.

A hypothetical element exists as two isotopes: I = 68.00 amu and II = 71.00 amu. If the percent abundance of isotope I is (6.61x10^1)%, what would be the calculated atomic mass (in amu)?