The atomic masses of 6 Li and 7 Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the natural abundances of these two isotopes. The average atomic mass of Li is 6.941 amu.

Q: Calculate the mass (in g) of 2.0x10^24 atoms of Pt.

A: Given, number of atoms of Pt = 2.0 x 1024 atomsWe know, => moles of Pt = number of atoms of Pt /…

Q: chemical formula

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Q: Magnesium (average atomic mass = 24.305 amu) consists of three isotopes with masses 23.9850 amu,…

A: This question is answered by using the simple concept of calculation abundance of the isotopes using…

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: The element X has two naturally occurring isotopes. The masses (amu) and % abundances of the…

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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: There are two gas compounds that are made out of element  A and B. This is the mass percentage of…

A: Given: Mass percentage: Compound 1: 30.43% A, 69.57% B Compound 2: 63.64% A, 36.36% B

Q: The three isotopes of a naturally occurring mystery element X are 39X, 38.963707 amu; 40X, 39.963999…

A: Isotopemasspercent of natural abundance39X38.963707 amu93.2581 %40X39.963999 amu[100 - (93.2581 +…

Q: an unknown element is a mixture of isotopes 120X and 122X. the average atomic mass of X is…

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Q: Bromine and chlorine react to form simple diatomic molecules in a 1:1 ratio, BrCl. The natural…

A: The least common form of BrCl is the molecule that is made from each of the Br and Cl atoms…

Q: Naturally occurring rubidium (Rb) consists of two isotopes: 85Rb (atomic mass 84.9117) and 87Rb…

A: Any chemical element's variants which are distinct in neutrons number but same in protons number are…

Q: For which element does a sample of 1.5055 × 1024 atoms have a total mass of 70.215 g? P, Si, S

A: Number of atoms = 1.5055 × 1024 atomsmass = 70.215 gIdentify the element present in the sample,• P•…

Q: Determine the mass of 5.0x10^23 tungsten (w) atoms

A: One mole of any substance will have 6.023× 1023 . Therefore number of moles in 5.0× 1023 atoms,…

Q: 7. Isotopes, (a) Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the…

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

A: Given : Atomic mass of Li = 6.9412 amu Isotopic mass of 6Li isotope = 6.015123 amu  And Isotopic…

Q: Antimony has many uses, including infrared devices and as part of an alloy in lead storage…

A: a) Notation for each isotope antimony 121 ---->   51Sb121   antimony 123 ---->   51Sb123

Q: A cylindrical piece of pure titanium (Ti, density=4.506 g/cm^3) has diameter d=1.15 cm and length…

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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: A 5.93 g sample of calcium sulfide was decomposed into its constituent elements, producing 3.30 g of…

A: From the law of definite proportions, we know that regardless of source or method of prepration of…

Q: How many carbon atoms are there in a 1.0-carat diamond? Diamonds are a form of pure carbon. ( 1…

A: Given:1 carat=0.20gWe know,Atomic mass of C=12.0107g/molalso, 1 mol of C=6.022×1023 atoms of C

Q: Small amounts of platnium are used in automotive spark plugs. What is the mass, in grams, of 3.21 x…

A: Since moles = number of atoms / Avogadro's number  And Avogadro's number = 6.022 X 1023  And moles…

Q: An unknown element is a mixture of isotopes 151X (atomic mass= 150.99 amu) and 153X (atomic mass =…

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Q: The two naturally occurring isotopes of silver have the following abundances: 107 AG, 51.84%; 109…

A: The mass of 107-Ag is 106.905092 uThe abundance of 107-Ag is 51.84%The abundance of 109-Ag is…

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.