An element has two different isotopes: one that weighs 65 amu and another that weighs 67 amu. If the average atomic mass of all the isotopes is 65.5 amu, what can be said about the relative abundance of the isotopes?
a. The isotope with the mass of 66.5 is more abundant than the isotope with the mass of 65
b. The isotope with the mass of 67 is more abundant than the isotope with the mass of 65
c. The isotope with the mass of 66.5 is more abundant than the isotope with the mass of 67
d. The isotope with the mass of 65 is more abundant than the isotope with the mass of 67
e. All the isotopes have the same relative abundance
An element has two different isotopes: one that weighs 65 amu and another that weighs 67...
In another universe, element trinium has two naturally occurring isotopes, 34Tr and 35Tr. One of these has a natural abundance of about 10% and one is about 90%. If the atomic mass of trinium is 34.1 amu, what is most likely to be the isotope that is about 90% abundant? options: trinium-34 trinium-35
1. An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu, and a relative abundance of 57.4%. Isotope 2 has a mass of 122.9042, and a relative abundance of 42.6%. Find the atomic mass of this element and identify it by name and symbol.
8. An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%. Isotope 2 has a mass of 122.9042 amu. Find the atomic mass of this element and, by comparison to the periodic table, identify it.
the element X has naturally occurring isotope. The masses (amu) and % abundance of the isotopes are given below. the average atomic mass of the element is ? Isotope: 221X, 220X, 218 X Abundance: 74.22, 12.78, 13.00 Mass: 220.9, 220.0, 218.1
QUESTION 3 A fictitious element is composed of isotopes A and B with masses of 61.9887 and 64.9846 amu respectively. The average atomic mass of the element is 64.52 amu. What can you conclude about the natural abundances of the two isotopes? O The natural abundance of isotope A must be greater than that of isotope B OThe natural abundance of isotope B must be greater than that of isotope A. O The natural abundances of both isotopes must be...
The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is _ _amu. Isotope Abundance (%) Mass (amu) 221X 74.22 220.90 12.78 220.00 2187 13.00 218.10 2207 219.70 220.34 220.43 219.00 33.333
5. An element consists of two isotopes in the indicated natural abundances: Isotope A, mass=84.9118 amu, abundance = 72.15% Isotope B, mass = 86.9092 amu, abundance = 27.85% What is the atomic weight of this element? What is the identity of the element? Show your calculations.
If the mass of the only two isotopes of an element are 115.3026 amu and 122.8251 amu and the weighted average mass is 118.1471 amu, what is the percent abundance of the lighter isotope? Selected Answer: X b. 37.8 Correct Answer: e. 62.2
A mysterious newly discovered element is found to consist of two isotopes I and II. It is found that the relative abundance of isotope I is equal to 68.12%. If isotope I has a mass of 308.72 amu and isotope II has a mass of 311.19 amu, then what is this element's average atomic mass?
1. An element, A, has 2 naturally occurring isotopes. Isotope-1 has a mass of 40.00 amu, and isotope-2 has a mass of 44.00 amu. If isotope-1 is 4 times more abundant than the isotope-2, what is the mass of element A?