An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance of one isotope is 73.907% and its atomic mass is 84.9117 a.m.u. What is the atomic mass of the second isotope, in a.m.u.?

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: Consider Titanium. It is a metal with the same strength as steel, but it is 45% lighter. It is also…

A: The molar mass of titanium is 47.867g/mol Thus, the mass of 1 mol of titanium is 47.867g

Q: How many grams are in moles of F? Atomic weight of F is=19.00

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Q: 7. How many sodium atoms is equal to five moles of the atoms? а. 5 b. 3.011 x 1024 с. 500 d. 6.022 x…

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Q: The atomic mass of aluminum is 26.982u. How many alluminum atoms are in a 4.55g sample of aluminum?

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Q: The ratio of the mass of O to the mass of N in N20z is 12:7. An- other binary compound of nitrogen…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7 Mass of O in N2O3 = 3x16 amu…

Q: Tin has 10 stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms.…

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A: ]Average atomic mass=Σ%abundance x mass of isotope100

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: There are two different isotopes of bromine atoms. Undernormal conditions, elemental bromine…

A: Hello. Since the question contain multiple sub-parts, the first three sub parts are solved. In case…

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Q: Unknown element, Element X, exists in nature as two isotopes: ^{351}351 X has a mass of 350.9196 u…

A: Average atomic mass=∑i=1n (mass of ith isotope)(%abundance of ith isotope)100 where 'i'…

Q: The element silicon has 3 naturally occurring isotopes, 28Si (27.976927 u); 29Si (28.976495 u) and…

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Q: Need help

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Q: A 67.2 g sample of a gold and palladium alloy contains 3.33*10^23 atoms.  a) What is the mass % of…

A: Given data,Mass of alloy=67.2gTotal number of atoms=3.33×1023atoms

Q: When a chemical reaction occurs, atoms rearrange to form new compounds, but no new atoms are created…

A: Figure shows A is single element. There are 4 A atoms present in the reactant side. B is diatomic…

Q: 4. An element “X* has five major isotopes, which are listed below along with their abundances. What…

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Q: How many grams of Kr are there in a sample of Kr that contains 6.43×1023 atoms? A sample of Xe…

A: Hello. Since multiple questions have been posted and the questions which need to be solved haven’t…

Q: You are making an alloy of tantalum (Ta) with an atomic weight of 180.94788 g/mole and magnesium…

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Q: If a different nail is coated with a 0.053 cm thick layer of zinc and the surface area of the nail…

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Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: 6. This Magnesium top by ForeverspinTM weighs merely 6g. a) Write the weight of this top in…

A: The question is based on mole concept. We have to determine number of particles present in 6 gram of…

Q: 3. (a) Magnesium oxide was formed when the metal burns in air. (i) If 1.25 g of magnesium oxide…

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

A: Hydrated Salt -  It is a crystalline salt to which water molecules are loosely bound.  Molar mass of…

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: A sample of Ni weighs 73.6 grams. Will a sample of Ag that contains the same number of atoms weigh…

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Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: 6. The precise mass of a compound was determined by high resolution mass spec to be 84.0575. Using…

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

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Q: A 21.37 gram sample of an unknow element contains 0.3267 moles what is the identity of the element

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Q: molybdenum Atomic Number 42 Molybdenum has seven isotopes, each with natural abundances between 9 -…

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Q: galena a mineral of lead is a compound of the metal with sulfer. Analysis shows that a 17.74 g…

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Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46…

A: Average atomic mass = m1f1 + m2f2 + m3f3

Q: A new synthetic element is found to have two isotopes. One isotope has an abundance of 68.2% and a…

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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: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: d. What is the % composition of carbon in Excedrin? e. What is the % composition of hydrogen in…

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Q: The ratio of the mass of O to the mass of N in N2O3 is 12:7. Another binary compound of nitrogen has…

A: Step 1        N2O3Mass of Oxygen in N2O3 = 16x3 =48gMass of Nitrogen in N2O3 = 14x2 = 28gMass of…

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.