Iron has three major isotopes: 54Fe (atomic mass = 53.9396 u; abundance 5.85%), 56Fe (atomic mass = 55.9349 u; abundance 91.75%), and 57Fe (atomic mass = 56.9354 u; abundance 2.12 %). Calculate the atomic weight (average atomic mass) of iron.

Q: Almost all boron atoms are found in two forms: boron-10 and boron-11. Both isotopes behave alike…

A: Given, Boron atoms are found in two forms: boron-10 and boron-11 Average mass of B = 10.81 amu

Q: Rubidium has two naturally occurring isotopes, rubidium-85(atomic mass = 84.9118 amu; abundance =…

A: The element carrying dissimilar neutrons number or atomic mass which might be more or less than its…

Q: An imaginary element Xz consists of two isotopes having masses of 100.0amu and 102.0 amu. A sample…

A:

Q: The two isotopes of potassium with significant abundance in nature are 39K (isotopic mass 38.9637…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. There…

Q: Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R…

A: Given: First Compound = 14.0 g R + 3.00 g Q  Second Compound =  7.00 g R + 4.50 g Q = RQ

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 130.13…

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Q: The atomic masses of 6 Li and 7 Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the…

A: The isotopes of Lithium are Li6  and  Li7 whose atomic masses are 6.0151 amu and 7.0160 amu…

Q: Lithium forms compounds which are used in dry cells and storage batteries and in high-temperature…

A: The variants of any element containing dissimilar neutrons number but similar protons number (atomic…

Q: Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics…

A: Average atomic mass- Naturally occurring element exists as mixture isotopes. Isotopes are with…

Q: An element X exists as two isotopes - 46X and 49X and weigh 45.95 amu and 48.95 amu, respectively.…

A: Given :-  Atomic wt.of 46X = 45.95 amu  Atomic wt.of 49X = 48.95 amu  Average atomic wt.of X = 46.66…

Q: The water found on Earth is almost entirely made up of the 'H and 1°0 isotopes for a formula of H20…

A: The different variants of a particular element, that are differed by the number of neutrons. In…

Q: Lithium has two isotopes, 6Li (mass = 6.015 u) and 7Li (mass = 7.016 u). If the average atomic mass…

A: The average atomic mass of lithium = 6.716 u The two isotopes of lithium 6Li = 6.015 ( mass )…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: The formula for fractional abundance is, Fractional abundance=0.01×Abundance(%)

Q: The two isotopes of potassium with significant abundance in nature are ³⁹K (isotopic mass 38.9637…

A: NOTE : The sum of abundance of the two isotopes should be 100 %. And since the abundance values do…

Q: The atomic masses of 6Li and 7Li are 6.0151 amu and  7.0160 amu, respectively. Calculate the natural…

A: Given data contains, Atomic mass of 6Li is 6.0151 amu. Atomic mass of 7Li is 7.0160 amu. Average…

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 129.47…

A: Average atomic mass has Following formula - Average atomic mass = atomic mass of first isotope × % +…

Q: In nature, gallium (Ga) is found as two isotopes. Calculate the atomic mass of this element. 69…

A: If an element exist in two isotopes then to calculate its atomic mass, multiply all the element…

Q: Assume that Element Q has the following three isotopes: 248 Q, 252 Q, and 259 Q. If the atomic mass…

A: Average atomic weight is the sum of the masses of the individual isotopes each multiplied by its…

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: Chorine has 2 isotopes, 35Cl and 37Cl. A fellow student calculated the natural abundances of each…

A: Answer - According to the question - Given values are - Chorine has 2 isotopes,1 = 35Cl…

Q: 2. What is the relative abundance of each isotope present in a sample of Tin if the average atomic…

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Q: Gallium has two naturally occurring isotopes, ⁶⁹Ga (isotopicmass 68.9256 amu, abundance 60.11%) and…

A: The average atomic mass of an element having isotopes can be calculated from the formula given…

Q: An element X has the following masses and % abundance. 35X  (34.97 amu 75.8%) and 37X ( 36.99amu…

A: Answer :- amu (atomic mass unit) - It is the unit to express the atomic mass.  % abundance - It is…

Q: Explain why the atomic mass listed on the periodic table is 126.9 amu for an atom of iodine and, for…

A: Isotopes are the compounds which have same atomic number but different mass number.

Q: The elements nickel (Ni) and boron (B) form two binary compounds with the following compositions:…

A:

Q: 2. The atomic masses of 35Cl (75.53%) and 37Cl (24.47%) are 34.968 amu and 36.956 amu, respectively.…

A: We'll answer the first question since the exact one wasn't specified. Please submit a new question…

Q: A mystery element has two main isotopes of 62.9300amu and 64.928amu. Their percent abundances are…

A: The isotopes are the elements having same atomic number but different mass number.

Q: An element consists of two isotopes. The abundance of one isotope is 95.72% and its atomic mass is…

A: From given Mass and percentage is given . So average atomic mass is determined by using the formula…

Q: A hypothetical element X has 2 major isotopes and an average atomic mass of 48.05 amu. Given that…

A: Given, Average atomic mass of X = 48.05 amu Atomic mass of one isotope, I = 49.08 amu Abundance of…

Q: Rubidium has two naturally occurring isotopes, from the following data calculate the value of X?…

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Q: Rubidium has two naturally occurring isotopes, rubidium-851atomic mass = 84.9118 amu; abundance =…

A: The element carrying dissimilar neutrons number or atomic mass which might be more or less than its…

Q: 7. If an element, “X" has two isotopes with the following masses and abundances: 46X = 45.974 amu ,…

A:

Q: Consider the table below. What is the relative abundance of isotope A? Isotope Abundance A 65 B 115…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Antimony, Sb (atomic mass 121.760 amu) has two stable isotopes: 121Sb (atomic mass 120.904 amu) and…

A:

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: Given :  Isotope Abundance Mass (u) 46Ti 78.900 % 45.95263 48Ti 13.800 % 47.94795 50Ti…

Q: Element X has two naturally occurring isotopes,  65X(isotopic mass  64.7471 amu, abundance 28.49%)…

A: Given : Element X has 2 naturally isotopes. Mass of isotope 65X = 64.7471 amu Abundance of 65X =…

Q: hydrated salt MSO3⋅4H2O, the mass percentage of H2O is 44.71%. Identify the element M in the salt?…

A: Consider a solution consisting of A and B Then, percent of A = (Mass of A x 100)/ Mass of (A + B)

Q: What is the average atomic mass of an element that has 3 isotopes with the data below? Isotope…

A: Average Atomic mass=((molecular mass Isotope 1 x % abundance )+(molecular mass Isotope 2 x %…

Q: 8- Bromine (Br) has two isotopes, with masses of 78.92 and 80.92 amu. The natural abundance of the…

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Q: There are two isotopes of the element lithium that occur naturally, 6Li (mass = 6.015 amu) and 7Li…

A: Let the percentage abundance of one of the isotope be x. Then the percentage abundance of another…

Q: The relative abundance and atomic masses are 0.337% (mass = 35.978 amu) 0.063% (mass = 37.963 amu)…

A: Average atomic mass of an element is the sum of the masses of its isotopes each multiplied by its…

Q: SCH3U Isotopes and Isotopic Abundance 1. What are the names, symbols, electrical charges, and…

A: (1) There are following three subatomic particles in an atom - Subatomic particle name Symbol…

Q: 1. Use the concepts of relative abundance and relative weight to explain why carbon has an atomic…

A: If the element have isotopes then its average atomic mass is calculated.

Q: An element, X, has two isotopes, 35X and 37X, whose respective abundances are 75.77% and 24.23% and…

A: Given, Mass of 35X = 34.9688 amu Mass of 37X = 36.9659 amu  Mass of X = ?

Q: 2. With a mass spectrometer, it can be determined that the mass 13C/mass 12C is 1.0836129. Determine…

A: Since the Ratio of atomic masses is given we will multiply the weight of 12 C carbon to get the…

Q: A hypothetical element, M, has four stable isotopes with the masses shown below. 109M = 108.9842…

A:

Q: Antimony has 2 stable isotopes 121-Sb mass 120.9038 and 123-Sb mass 122.9042 amu. Calculate the…

A: The Atomic mass of Antimony is 121.76 amu

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.