A fictional element Ho has two stable isotopes and an average atomic mass of 18.357 amu. Use the information in the table to calculate the mass of a 20Ho atom,      19.731 19.1990 23.260 18.455

Q: The two naturally occurring isotopes of element X are ^18X (80%) and ^19X. What is the average…

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

Q: Botón is composed of two of two isotopes, one of mass 10.0129370 amu and one of mass 11.0093054 amu.…

A: Isotopes can be defined as members of family of an element that have the same atomic number but…

Q: what's the atomic mass units for 1 bratom with a mass of 1.31 x 10^ - 23

A: To find atomic mass unit  of 1 Br atom if mass of atom = 1.31 x 10-23 g

Q: ilver is composed of two naturally occurring isotopes: Ag-107 (51.839%) and Ag-109. The ratio of the…

A: First calculate the percent abundance of Ag-109.

Q: Consider the following equation: The mass number of element X is: 226A + 15B → 80C + {x}X + 4 1n

A: The nuclear reaction is  226A + 15B → 80C + {x}X + 4 1n  Now , Total mass number in left hand side…

Q: 5. A sample of Rb recovered from a nuclear reactor has an unusual distribution of isotopes. If the…

A: Average atomic mass is the sum of products of mass of each isotop and it’s natural abundance. It can…

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: A fictional element has two isotopes and an ayomic mass of 87.08 amu. If the first isotop is 85.654…

A: Atomic mass of element ,M= 87.08 amu Mass of first isotope,  M1  = 85.654 amu Mass of second…

Q: Fill in the blanks. Isotope 76AS3- has: Number of protons Number of neutrons Number of electrons…

A:

Q: A theoretical element Z has two stable isotopes. One isotope is 42Z with a mass of 41.96 amu and a…

A: Mass spectrometry is an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one…

Q: Antimony has two naturally occurring isotopes: Sb-121, with mass 120.90 amu and a natural abundance…

A:

Q: An atom can be thought of as being

A: There exist three types of atoms with a single proton in their nucleus. These are the isotopes of…

Q: Copper has 2 stable isotopes, namely Cu-63 and Cu-65. The atomic masses of the said isotopes are…

A:

Q: What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass =…

A: We have to calculate the average atomic weight of the given element using the mass and abundance of…

Q: Antimony Sb has two stable isotopes 121 Sb (at mass 120.904 amu) with a natural abundance of 57.36 %…

A:

Q: Rubidium has two naturally occurring isotopes. The elemental mass of Rb is 85.4678 u. If 72.165% of…

A: Given: Rubidium has two naturally occurring isotopes. The elemental mass of Rb = 85.4678 u The…

Q: 26. An element has 2 stable isotopes. The mass of one is 68.9257amu and its abundance is 60.4%. The…

A: The average atomic mass of an element is equal to the average of individual isotopic masses…

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: suppose an element consisted of two isotopes with the masses 89.9 amu and 91.1 amu. If 1.500 x 10^-3…

A:

Q: The element silver has two naturally occurring isotopes: 109Ag and 107Ag with a mass of 106.905 amu.…

A: The mass of 109Ag is to be calculated.

Q: Naturally occurring silver consists of two isotopes: 107Ag (51.84%) with an isotopic mass of…

A: Given:The two isotopes of silver are 107Ag and 109AgIsotopes         Natural abundance…

Q: What is the average atomic mass of halfnium if, out of every 100 atoms, 5 have mass 176.0, 19 have…

A:

Q: Pb undergoes four decay reactions: B, a, B, B. Step 1. 214 Pb undergoes ß decay to give 1“Bi 82 Step…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: Calcium is a major component of human bones. In the absence of Calcium which of the following…

A:

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

A:

Q: The isotopic abundances of cadmium are given in the table below. Nuclide Abundance (%) Mass 106Cd…

A: The isotopic abundances of cadmium are given in the table below.    Nuclide Abundance % Mass…

Q: The atomic masses of the stable isotopes of boron, 105B (19.78%) and 115B (80.22%), are 10.0129 and…

A:

Q: Silver occurs as two isotopes with atomic masses 106.9041 and 108.9047 amu. The first isotope…

A: The avg Atomic mass = (Atomic mass of isotope 1 X % of isotope 1 + Atomic mass of isotope 2 X % of…

Q: Copper has two naturally occurring isotopes: 69.17% of Cu-63 (mass 62.93 amu) and 30.83% of Cu-65…

A: Average atomic mass of Cu = [(% abundance of Cu-63 x Mass of Cu-63) +(% abundance of Cu-65 x Mass of…

Q: Naturally occurring uranium has three isotopes. Calculate the atomic mass of uranium with these…

A:

Q: Element X is found in two forms 90.0% is an isotope that has a mass of 20.0, and 10.0% is an isotope…

A: Average atomic mass unit = ( abundance of 1st isotopes* atomic mass + abundance of 2nd isotope *…

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.