Argon has three common isotopes, with the masses and isotopic abundances shown below: Argon-36 ---> 35.97 u and 4.283 % Argon-38 ---> 37.96 u and 0.196 % Argon-40 ---> 39.96 u and Determine the average atomic mass of argon to two decimal places.

Q: A fictional element has two isotopes and an atomic mass of 76.34 amu. If the first isotope (Isotope…

A: Average atomic mass = 76.34 amu  First isotope = 20.21 amu  Second isotope = 80.76 amu  We have to…

Q: Silicon has three common isotopes, with the masses and isotopic abundances shown below: Silicon-28…

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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: 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: Naturally occurring chlorine (Cl) consists of two isotopes. One of the isotopes has a mass of 34.969…

A: Isotopes have same atomic number but different atomic mass or mass number. Atomic number is equal to…

Q: . An element has three stable isotopes with masses of 27.977 amu, 28,976 amu, and 29.973 amu. The…

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Q: A certain element X has four isotopes. 0.5600% of Xhas a mass of 83.91343amu. 9.860% of Xhas a mass…

A: Since element X is an isotope. Isotopes are that element which has the same atomic number but has…

Q: Atomic mass of aluminum is 27. Accordingly, which of the following statements is wrong? O A) The…

A: Molar mass of Al is 27 g  1 gram atom of Al is 27 g  Mass of Al is 27/12 times of the C  Atomic mass…

Q: An unknown element is determined to have two naturally occurring isotopes. Isotope 1 has a mass of…

A:

Q: X is an element with 3 isotopes, X-139, X-140 and X-141. The relative abundance of each isotope is…

A: If A1 , A2 and A3 are mass numbers of three isotopes of an element with relative abundance X1 , X2…

Q: Potassium has 2 stable isotopes, 39K and 41K with atomic mass of 38.9637 amu and 40.9618 amu. If the…

A: Given: The average mass of potassium = 39.10 u The atomic mass of 39K = 38.9637 u The atomic mass…

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: Copper has only two naturally occurring isotopes, Cu-63and Cu-65. The mass of Cu-63 is 62.9396 amu,…

A: The relative abundance of each isotope of an element can be determined using the following formula:…

Q: Isotopes of the same element have different mass numbers? true or false

A: isotope are  two or more species of element  with the same atomic number and position in the…

Q: Back on planet Earth, elements have different isotopic distributions. The atom Chlorine ( Cl ) has…

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Q: ilicon has three common isotopes, with the masses and isotopic abundances shown elow: licon-28 --->…

A: Given-> M1= 27.98 u.        P1=0.882% M2=28.98u.           P2=0.018% M3=29.97 u.

Q: Consider bromine, which occur as a mixture of two isotopes: bromine-79, with natural abundance of…

A: Given: The abundance of Br-79=50.7% The abundance of Br-81=49.3% The atomic mass of Br-79=78.92 amu.…

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: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

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

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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: The element boron, a trace element in Earth’s crust, is found in foods produced from plants. Boron…

A: The correct option is C) Boron – 11.

Q: 5- Atomic mass of aluminum is 27. Accordingly, which of the following statements is wrong? O A) The…

A: The wrong ans is 1st one

Q: a. 0 35. Rubidium has two naturally occurring isotopes, Rb-85 (relative mass 84.9118 amu) with %…

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Q: Titanium has five common isotopes: 46Ti (8.000%, 45.95 amu), 47 T (7.800%, 46.95 amu), 48Ti (73.40%,…

A: Given 46Ti (8.000%, 45.95 amu), 47 Ti (7.800%, 46.95 amu), 48Ti (73.40%, 47.95 amu), 49Ti (5.500%,…

Q: An element has three naturally occuring isotopes with the following masses and abundances…

A: This element is Silicon as the data provided within the question is relevent to the Silicon Element

Q: Naturally occurring silicon consists of three isotopes with the following isotopic masses and…

A: using the formula of average atomic mass Average atomic mass= ∑isotope given value ×abundance /100…

Q: Tungsten is a rare metal found naturally on earth almost exclusively combined with other elements in…

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Q: Antimony has two naturally occuring isotopes, Sb121 and Sb123. Sb121 has an atomic mass of 120.9038…

A: Given: Weight of isotope Sb121 = 120.9038 u Weight of Isotope Sb 123 = 122.9042 u. Average atomic…

Q: 3. What is the average atomic mass of hafnium given the following abundance information on its…

A: Average atomic mass can be determined by the equation given below: Avg.atomic mass =…

Q: There are only two naturally-occuring stable isotopes of boron. The mass and natural abundance of…

A: Given that boron has two naturally occurring isotopes. One of them is B-11 with atomic number 5. The…

Q: Potassium has three naturally occurring isotopes.  According to one source of data, Potassium-39…

A: Average atomic mass of Potassium  = (38.9637 × 0.9326 ) amu + (39.9640 × 0.0001 ) amu + ( 40.9618 ×…

Q: The image shows a representative sample of 50 atoms of a fictious element, called lemonium (Le).…

A: The average atomic mass of an element with three isotopes is given by  Avg atomic mass =…

Q: Copper has two naturally occurring isotopes, ⁶³Cu (isotopicmass 62.9396 amu) and ⁶⁵Cu (isotopic mass…

A: Given, Mass of 63Cu (isotope I) = 62.9396 amu Mass of 65Cu (isotope II) = 64.9278 amu Atomic mass of…

Q: An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The…

A: The average atomic mass of an element is calculated by considering the atomic mass of each isotope…

Q: The element nitrogen has two naturally occurring isotopes. One of these has a mass of 14.0 amu and a…

A: Given data contains, Atomic mass of isotope-1=14.0 amu Percent abundance of isotope-1=99.63% Atomic…

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

A:

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: Element X has two naturally occurring isotopes, 20X with a mass of 19.99 amu and 22X with a mass of…

A:

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

A: When an element exists in the form of two or more than two isotopes, the term average atomic mass Is…

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

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Q: Silicon (average atomic mass=28.0855amu) has three isotopes. Their masses are 27.9769amu,…

A: Given mass of silicon isotope = 28.0855 amu % abundance of highest isotope i.e  29.9738 amu = 2.96 %…

Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 12.01%. a) A…

A: Isotopes are elements that have same number of protons but different number of neutrons.

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: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.63%. Now…

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Q: An unknown element is a mixture of isotopes 151X and 153X. The average atomic mass of X is 151.69…

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Q: Atmospheric argon is a mixture of three stable isotopes 36Ar, 38Ar, and 40Ar.  Use the information…

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Q: [Atomic mass and isotopes] An unknown element has two naturally occurring isotopes: X- 69 and X-71.…

A: Given Natural  abundance of X-71 = 49.31% Mass of X-71 = 70.9163 amu

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…

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.