An element has two isotopes. One isotope has a mass of 63.22 g. The other has a mass of 67.88 g. If the average weight of the atomic mass is 65.55, what is the percent of the larger isotope? Report your answer to two decimal places.

Q: A fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

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Q: You have a compound with the formula X₂Y. X is an isotope with a mass of 20g/mol and Y is an isotope…

A: Mass of X = 20 g/mol Mass of Y = 43 g/mol

Q: A new element, greenriverium (Gr), has three naturally-occurring isotopes. Isotope 1 has a mass of…

A: The atomic mass is the average mass of all the isotopes. So that we calculate the average mass with…

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

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Q: An unknown element is determined to have two naturally occurring isotopes. Isotope 1 is 62.11%…

A: Atomic mass of element can be determined by adding the product of %abundant and mass of isotopes.…

Q: Back on planet Earth, elements have different isotopic distributions. The atom Chlorine ( Cl ) has…

A: Given isotopic Atomic mass of  Cl -35  = 34.968853 amu Isotopic atomic mass of Cl-37    = 36.965903…

Q: olo There are only two naturally-occuring stable isotopes of boron, the masses of which are listed…

A: We will calculate the natural or relative abundance of Boron isotopes. we will apply simple mole…

Q: A compound containing only carbon and hydrogen has a carbon-to-hydrogen mass ratio of 11.89. Which…

A: The solution of this question is given below-

Q: Boron consists of two isotopes. The reported mass of boron is the weighted average of these two…

A: Boron has two isotopes which are B-10 and B-11. It is given that the abundance of B-11 is x and for…

Q: An imaginary element (x) on Mars is composed of two isotopes, 54.93% of isotope x-34 with a mass of…

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Q: Nitrogen has two isotopes, N-14 and N-15. The isotopic masses of these isotopes are 14.0031 amu and…

A: Let consider x and y be the abundance of N-14 and N-15 isotopes of nitrogen respectively. Then we…

Q: Naturally occurring uranium consists of two isotopes, whose masses are shown below: Isotope Mass…

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Q: À fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

A: Average atomic mass can be calculated by the following formula. Average mass=∑mass of…

Q: 19,9924 AMU is the mass of one of the three isotopes of neon equaling 90.4838%. One of the other two…

A: Here, the three isotopes of Neon is

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: According to law of constant proportional, any chemical compound will always contain the elements in…

Q: Calculate the mass of a gold-197 atom using the information from question 9 and the masses of the…

A: The ratio of mass to the volume of the solution is known as density.

Q: The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le).…

A: The average atomic mass of an element with three isotopes is given by  Avg atomic mass =…

Q: 10. Copper has two naturally occurring isotopes, 6Cu (isotopic mass = 62.9296 amu) and 6Cu (isotopic…

A: Atoms of the same element having same atomic number but different mass number are called as…

Q: The human body contains many elements from the periodic table. It is mostly composed of oxygen and…

A: Mass Of hydrogen = 7.07.0 kg Mass of phosphorus = 0.780.78

Q: Tennessine has two naturally occurring isotopes.  Tennessine-293 has an atomic mass of 292.9498 and…

A: Given  Atomic mass of Tennessine -293 ( m1 )  = 292.9498 amu Atomic mass of Tennessine - 296 ( m2 )…

Q: A generic element, G, is composed of two isotopes, ¹32G and 128G. 132G has a natural abundance of…

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Q: An element, Spencerecium, has two isotopes.  Spencerecium-145 has a relative abundance of 85 % and…

A: Abundance of spencerecium -145 = 85%  Abundance of spencerecium-140 = 15%

Q: A sample of lithium consists of 400 atoms. 30 atoms are the isotope Lithium-6 (6.015 amu) and 370…

A: Calculation of average atomic mass using % abundance of isotopes:

Q: At some point in the future, nuclear chemists have synthesized two stable isotopes of bohrium.…

A: Since average mass of the element is given so we can easily calculate the fraction of each isotope…

Q: A naturally occurring element consists of three isotopes: isotope 1: 98.62 u, 45.65% isotope 2:…

A: Average atomic mass is the weighted average of masses of the elements present in the nature…

Q: An unknown element (Uk) has three isotopes, seen in the table. One of the percentage values is…

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Q: new (imaginary) element has been discovered.  It exists in three naturally occurring isotopic forms.…

A: . Suppose an Element 'Y' consistof three isotopes :-    Isotopes mass amu      abundanceY.      X1…

Q: Bromine has two stable isotopes: 79Br and 81Br with masses of 78.9183371 amu and 80.9162906 amu. If…

A: In this question we have to tell the the Mass of 79Br in 10 gram of Br which has 79.904 amu mass.

Q: Antimony, Sb has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a…

A: Given percentage abundance  Sb-121 = 57.25℅ Sb-123 = 41.75℅ Mass of Sb-123 = 122.9041 amu atomic…

Q: Antimony has two naturally occuring isotopes, 121Sb and 123Sb. 121Sb has an atomic mass of 120.9038…

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Q: Element Z has two naturally occurring isotopes. The isotope with a mass of 10.012 amu (10Z) has a…

A: Average atomic mass of element Z  = 10.012 amu × 0.1991 + 11.009 amu × 0.8009 = 10.810 amu ≈ 10.81…

Q: An element has the following natural abundances and isotopic masses: 78.99% abundance with 23.985…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.