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Isotopes

Q. The two naturally occurring isotopes of bromine are • 81-Br( 80.916 amu, 49.31%) and • 79-Br ( 78.918 amu, 50.69%). The two naturally occurring isotopes of chlorine are • 37-Cl (36.966 amu, 24.23% ) and • 35-Cl (34.969 amu, 75.77%). Bromine and chlorine combine to form bromine monochloride, BrCl. How many peaks will be present in a mass spectrum for BrCl? Express your answer as an integer.

Solved • Feb 8, 2020

Isotopes

Q. A certain element X has four isotopes. • 4.350% of X has a mass of 49.94605 amu. • 83.79% of X has a mass of 51.9405 amu. • 9.500% of X has a mass of 52.94065 amu. • 2.360% of X has a mass of 53.93888 amu. What is the average atomic mass of element X? Express your answer numerically to four significant figures.

Solved • Feb 8, 2020

Isotopes

Q. Rank the following hydrogen peroxide molecules from the highest to lowest mass. Rank from highest to lowest molecular mass. To rank items as equivalent, overlap them.

Solved • Feb 8, 2020

Isotopes

Q. Which of the following water molecules exists in the greatest abundance? a) D2 17-O b) H2 18-O c) T2 18-O d) H2 16-O e) D2 16-O f) T2 17-O

Solved • Feb 8, 2020

Isotopes

Q. Naturally occurring cobalt consists of only one isotope, 59-Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, 60-Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8330 g sample of cobalt has an apparent "atomic mass" of 58.9901. Find the mass of 60-Co in this sample. Express your answer with the appropriate units.

Solved • Feb 8, 2020

Isotopes

Q. An element has four naturally occurring isotopes with the masses and natural abundances given here. Find the atomic mass of the element. Express your answer to four significant figures and include the appropriate units. Identify the element. Spell out the full name of the element.

Solved • Feb 8, 2020

Isotopes

Q. The certain element consists of two stable isotopes, one with mass 10.0129 with an abundance of 19.78%, and the second with mass 11.00931 and an abundance of 80.22%. What is the element?

Solved • Jan 31, 2020