Indium has two naturally occurring isotopes: 113In, with an atomic weight of 112.904 amu; and 115In, with an atomic weight of 114.904 amu. If the average atomic weight for In is 114.818 amu, calculate the fraction-of-occurrences of these two isotopes.

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

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Q: v, the number of v of Rf is 104 and its v is 267. Therefore the number of protons is One of the…

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A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: An unknown element is a mixture of isotopes 120X and 122X.  The average atomic mass is 120.70.  What…

A: Suppose percentage abundance of 122X = A percentage abundance of  120X = (100 - A) Fraction of 122X…

Q: An element (A) has 5 isotopes. The masses (and abundances) of the isotopes 46A, 47A, 48A, 50A are…

A: Given:Average atomic mass = 47.87u.49A/50A = 3.361.

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Q: There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%,…

A: Given  molar mass of X1 = 28 with abundance 92.2297% molar mass of X2 = 29 with abundance 4.6832%…

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

Q: the mass of OO is approximately 16 gg. What is the whole number multiple that describes the…

A: Given as, Mass of Sulphur in SO = 32 gms Mass of Oxygen in SO = 16 gms Mass of Sulphur in SO2 = 32…

Q: Would it be possible to determine the percentage of oxygen in NaCIO3?

A: The given compound is = NaCIO3 The percent of oxygen in this compound is =?

Q: A hypothetical element, E, has two stable isotopes. One isotope has a natural abundance of 66.909%…

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Q: 1. The noble gas, neon, has three isotopes of masses, 22, 21, and 20. If the isotopes have the…

A: Average atomic mass calculation: (1) Consider the given information is as follows;…

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: SOLUTION: Step 1: One Dalton is defined as one-twelfth the mass of one mole of carbon-12 isotopes.…

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 atomic masses of 6 Li and7Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the natural…

A: The natural abundance of the heaviest isotope is to be calculated.

Q: Iron exists in nature as a mixture of predominantly three isotopes: 26Fe (53.94 amu), 56 neFe (55.93…

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Q: Describe the law of constant composition?

A: The Law of constant composition is also termed as Proust's law of definite proportion. This law…

Q: The element stramonium (Sa, average atomic mass 628.23 u) reacts with the element kingsine (Ks,…

A: Mass of one molecule of SaKs7 = ( average atomic mass of Sa )+ ( 7 X average atomic mass of Ks )…

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

Q: (a) In the certain hydrated salt MSO3:4H2O, the mass percentage of H2O is 44.71%. Identify the…

A: The mass percentage of an element is the mass of that element / total mass of the compound. We can…

Q: Natural carbon, which has an atomic weight of 12.011 amu, consists of carbon-12 and carbon-13…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: What is the average atomic mass of element X if it exists as 19.90% with a mass of 10.18 and 80.10%…

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Q: Describe and distinguish between thelaw of conservation of mass, the law ofconstant composition, and…

A: In chemistry, a number of scientists put forward different theories to explain the properties of…

Q: In an experiment, the reaction of 100.0 g of iodine produced 144.9 g of a compound formed from…

A: It is an example of law of conservation of mass

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A: The isotope of fluorine having a mass of 18.998 amu is highly abundant by a very large amount, which…

Q: On a planet in another galaxy, tellurium exists as only two isotopes, Te123 and Te130. The masses…

A: The average atomic mass of element can be calculated by adding the masses of the isotopes each…

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: What does 1/5 have to do with this equation?     You take three compounds, each consisting of two…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: An element consists of 4.35% of an isotope with mass 49.946 u, 83.79% of an isotope with mass…

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Q: Suppose instead of burning Mg, pure carbon weighing 3.62, 5.91, and 7.07 g were burned in an excess…

A: The Law of Definite proportion state that The same mass ratio is possessed by the elemental…

Q: - Argon has three naturally occurring isotopes: 0.337% 36Ar, 0.063% 38Ar, and 99.60% 4ºAr. Estimate…

A: Given : There are 3 naturally occurring isotopes of Argon i.e Ar.

Q: The water found on Earth is almost entirely made up of the 'H and 160 isotopes for a formula of H2O…

A: The element which contains the same number of protons and different number of neutron is known as…

Q: A meteorite found in central Indiana contains traces of the noble gas neon picked up from the solar…

A: The average mass of an element can be defined as the sum of each individual isotope's mass…

Q: Sort the characteristic properties of the following isotopes of nitrogen into their respective bins.

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Q: If a sample of a difference compound decomposes into 0.429g of carbon and 0.57g of oxygen,what is…

A: The mass of carbon and oxygen are given as 0.429 g and 0.57 g. The ratio of mass of Oxygen and…

Q: Iron exists in nature as a mixture of predominantly three isotopes: 54, (53.94 amu), 5® 26FE (55.93…

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Q: Although carbon-12 is now used as the standard for atomic weights, this has not always been the…

A: The atomic weights of H and O are 1.00794 g and 15.9994 g respectively. Weights of atoms are…

Q: Element R has three isotopes. The isotopes are present in 0.0825, 0.2671, and 0.6504 relative…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: How many electrons are necessary to produce a charge of -1.2 C? Express your answer using two…

A: Given that , The charge produced = -1.2 C

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: An element has two naturally occurring isotopes the first isotope has an abundance of 30.37% and a…

A: With data's given Initially we are finding percentage abundance of another(second) isotope and then…

Q: B) The average atomic mass of chlorine is 35.453. Does this mean that there are just two stable…

A: In order to explain the answer for the above question we have to first understand the given question…

Q: The element lead (Pb) consists of four naturally occurringisotopes with atomic masses 203.97302,…

A: From the given data, the atomic weight of lead can be calculated as -

Q: Estimate the percentage of the total mass of a 58Ni atom that is due to (a) electrons, (b) protons,…

A: Ni-58 has 28 electrons, 28 protons and 30 neutrons in it

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

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Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

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Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

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Q: An element X has two common isotopes: X-57 and X-59. If the average atomic mass of element X is…

A: An element has two isotopes : X-57 and X-59 Average Atomic mass = 58.876 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.