Example 3.1 Copper, a metal known since ancient tim is used in electrical cables and pennies, among other things. The atomic masses of its two stable isotopes, Cu (69.09 percent) and (30.91 percent), are 62.93 amu and 64. 29 C 65 amu, respectively. Calculate the average atomic mass of copper. The relative abundances are g in parentheses.

Q: Oxygen is the most abundant element in both Earth's crust and the human body. The atomic masses of…

A: When the product of atomic mass and abundance of each type of isotopes are summed up, we get the…

Q: Sulphur has three common isotopes, with the masses and isotopic abundances shown below: Sulphur-32…

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

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.

Q: Naturally occurring copper consists of 63Cu (mass 62.9296 amu) and 65Cu (mass 64.9278 amu), with an…

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Q: One way in which Earth’s evolution as a planet can be understood is by measuring the amounts of…

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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%…

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: the atomic masses of 10B and 11 B are 10.012938 and 11.009305 amu, respectfully. The average atomic…

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Q: 1. Which of the following formulas-NO, N20, NO2, N2O4, and N2O5-represent the empirical and…

A: Empirical formula of compound represent whole number ratio of atoms and molecular formula represents…

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

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Q: On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally…

A: Given: 1)To determine the no.of atoms of 124Sn present in 27.3g of natural sample. 2) To calculate…

Q: The organophosphate nerve agent A-234 is believed to have the formula C5H8F2NO3P. It is one of the…

A: Molecular formula: C5H8F2NO3P Isotope of organophosphate nerve agent with molecular formula…

Q: On a periodic chart of the elements, molar mass (M), also called atomic weight, is often listed as…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Bromine has two naturally-occurring isotopes. 79Br has a mass of 78.9 amu and accounts for 58.3% of…

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Q: 3.123 In the formation of carbon monoxide, CO, it is foundthat 2.445 g of carbon combine with 3.257…

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Q: On earth, tin has 10 different stable isotopes. The heaviest, 12Sn makes up 5.80% of naturally…

A:

Q: An alcohol is 70.57 % C and 5.935 % H by mass. The rest is oxygen. What is the empirical formula of…

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Q: The chemical formula for glucose is: C,H1206 How many carbon atoms are in each molecule of glucose?

A: The formula of glucose is given as C6H12O6.

Q: The natural isotopes of boron have masses 10.0129 and 11.0093 amu, with relative % abundance of 19.9…

A: Given: Mass of one isotope is 10.0129 amu. Mass of second isotope is 11.0093 amu. Relative %…

Q: What is the mass of a single fluorine molecule, F2?

A: The mass of a molecule is the mass of all the atoms present in the molecule in grams. In order to…

Q: Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even a soft…

A: The Isotopes given are Ce-136(atomic mass=135.907 amu), Ce-138(atomic mass=137.905 amu),…

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: Rubudium have two isotopes, 85Rb has mass 84.9117 amu and 87Rb has mass 86.905 amu. If the average…

A: The naturally occurring Rubidium  has two isotopes, therefore both of them are present in Rubidium…

Q: When carbon and oxygen react, two different compounds can form dependingon the conditions. Compound…

A: Given observation: When carbon and oxygen react, two compounds are formed. Compound A contains 1.333…

Q: hat is the mass percent of hydrogen in decaborane, B10H14?

A: Percent composition is defined as the ratio of  mass of single  element in one mole  to the mass of…

Q: The number of Cr atoms in a 26.0 g sample of chronium is x. How many atoms, expressed in terms of x,…

A: Number of moles = mass in gram / molar…

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: What if a new element, Tyserium (Ty), was discovered and was found to have two isotopes, Ty-331…

A: Average atomic mass can be calculated by using the formula: MTy=(% abundance of of…

Q: Determine the number of atoms of O in 27.9 moles of Na₂Cr₂O₇

A: Given the number of moles of Na2Cr2O7 =27.9 moleswe are asked to calculate the number of atoms of O…

Q: A compound is 32.88% C, 4.14% H, 19.18% N and 43.80% O by mass, and it has a molar mass of 219…

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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 unknown element X has the following isotopes: 5X (72.5% abundant) and 67X. What is the average…

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Q: Part A 13 How many moles of atoms are in 6.00 g of C? Express your answer numerically in moles. •…

A: Given : Mass of 13C = 6.00 g

Q: On earth, tin has 10 different stable isotopes. The heaviest, 12Sn makes up 5.80% of naturally…

A: Given: 124Sn (Tin-124) has 5.80% of naturally occurring tin atoms The mass of the natural sample of…

Q: An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative…

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Q: A hypothetical element, M, with average atomic weight of 35.75. M has three stable isotopes with the…

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Q: Phosphorus-31 forms an ion expressed as 31P3-.  What is the required change in the number of…

A: Concept introduction: Atom is smallest indivisible particles. Atom has subatomic particles,…

Q: 2.2. Boron has two naturally occurring isotopes, 1 B and "B. We know that 80.22% of its atoms are…

A: Answer: 2.2) Atomic weight of 10B 10.0084 u 2.3) Average atomic mass of Boron 10.81 g

Q: A hypothetical element has only 3 isotope Isotope 1: 44.98 u Isotope 2: 48.99 u Isotope 3: 53.97 u…

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Q: Since 1983, pennies have been made with zinc and plated with copper. Prior to 1983, pennies were…

A: Since from 1793-1837 pennies were made up of pure copper therefore, if you had a penny from 1800…

Q: U-238 is naturally the most abundant form of uranium; however, only U-235 can be used as fuel in a…

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Q: <p>Two substances have the same molecular and empirical formulas. Does this mean that they…

A: A molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different…

Q: Please use the precision of the values in the periodic table link to determine the correct number of…

A: The atomic mass of  He = 4.003 amu The atomic mass of  Fe = 18.998 amu The atomic mass of  Na =…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.