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Calculate the binding energy per nucleon in MeV for the iron isotope with an atomic
number of 26 and a mass number of 56,
56Fe26 which has an atomic mass of 55.9349 amu.
• Binding Energy: The amount of energy released when a nucleus is formed from its components.• Mass defect ΔM = Z*Mp + N*Mn-MAZ= Atomic no., N= No. of neutrons Mp = Mass...
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The atomic mass of two stable isotopes of boron, 10 5B (19.78%) and 11 5B (80.22%) are 10.0129 amu and 11.0093 amu respectively. Calculate the average atomic mass of boron.
Average atomic mass=(19.78%*10.0129amu + 80.22%*11.0093amu)/100%=10.8122amu
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Potassium has two naturally occurring isotopes: k-39 ( 93.12%; mass= 38.9637 amu), and k-41 ( 6.88%; 40.9618 amu). Calculate the atomic weight for potassium.
Atomic weight for potassium=39.1011amu.
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Natural boron is composed of two isotopes: 19.78% boron-10 (atomic mass = 10.0129 amu) and 80.22% boron-11 (atomic mass = 11.0093 amu). What is the average atomic mass of naturally occurring boron?
Average atomic mass=(19.78%*10.0129amu + 80.22%*11.0093amu)/100%=10.8122amu
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approximate atomic weight of element is 26.89 its equivalent weight is 8.9 the exact atomic weight is....
The molar mass of the equivalent (ME) is the mass of one mole equivalent. It is equal to the product of the molar mass of the substance by the equivalence...
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Calculate the rotational partition function for HCl at 298 K when the moment of inertia is 2.7 x 10e-47 kgm^2 ?
The rotational partition function for a heteronuclear diatomic molecule zrot = 8π2IkT/h2 , I - moment of inertia. zrot = 8*3.142*2.7 * 10-47*1.38*10-23*298/(6.63*10−34)2=19.92
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Observe the following RXN:
CH4 + O2 --> CO + 2H2O
Carbon has a mass of 12 amu, Hydrogen 1 amu and Oxygen 16 amu.
If 16g of CH4 and 32g of O2 are reacted, how much CO is produced?
The amount of CH4 is n(CH4) = m(CH4)/M(CH4) = 16/16 = 1 mol The amount of O2 is n(O2) = M(O2)/M(O2) = 32/32 = 1 mol According to the reaction...
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Fictitious element X has an a average atomic mass of 254.9 and only 2 isotopes, One of its isotopes has an abundance of 72.00 and a mass of 250.9 amu. What is the atomic mass of the second isotope?
Solution:The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance.Average atomic mass = f1M1 + f2M2 +… + fnMn where...
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silver has two naturally occurring isotopes, one of mass 106.91 amu and the other of mass 108.90amu. FInd the fractional abundances for these two isotopes. The atomic weight is 107.87 amu
Notice that the abundance of Ag-107 (106.91 amu) is assigned “x” and the Ag-109 (108.90 amu) is “1 – x”. 106.91x + 108.90(1 – x) = 107.87 106.91x + 108.90...
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What is the mass in amu of 2 molecules of Triuranium Octaoxide (U3O8)?
A. 254 amu
B. 208 amu
C. 842 amu
D. 1684 amu
E. 1952 amu
The mass in amu of 2 molecules of Triuranium Octaoxide (U3O8) is 1684 (D).
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