One isotope has an atomic weight of 408.5 atm and a percent abundance of 23.0% while the other isotope has an atomic weight of 414.3.  What is the weighted atomic weight of the element in atm?

Q: Isotopes are defined as atoms ofa. the same element with different numbers of protons.b. radioactive…

A: Atoms of the same element have the same number of protons, which is also called the atomic number.

Q: Which describes an atom of plutonium?A. It can be divided into smaller particles that retainall the…

A: A. It can be divided into smaller particles that retainall the properties of plutonium.B. It cannot…

Q: List some Isotopes of Carbon?

A: Isotopes are the compounds which have same atomic number(Z) or we can say that they have same number…

Q: [References] An element consists of 0.19% of an isotope with mass 135.907 u, 0.25% of an isotope…

A: Given : Mass of isotope 1 = 135.907 u  Abundance of isotope 1 = 0.19 % Mass of isotope 2 = 137.9060…

Q: How many isotopes of chlorine exist in nature?

A: The element chlorine has two isotopes, chlorine–35 and chlorine–37.

Q: How to calculate the relative atomic mass (6.015122) of 6Li, from the atomic mass of Lithium?

A: In the given question we have to calculate the relative atomic mass of Lithium.  we know that,…

Q: an element is a mixture of two isotopes. one isotope of the element has an atomic mass of 34.96885…

A: In this question, we want to determine the Average atomic mass and after that we will Identify the…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A:

Q: Calculate the atomic weight of silver, which has two isotopes with the following properties:…

A: Atomic weight: It is the weight that is determined by taking the summation of the atomic mass of all…

Q: The last “missing” element from the first six periods waspromethium, which was finally discovered in…

A:

Q: What is the atomic mass of oxygen-16 (15.9949 Amy) at 99.757%

A:

Q: uppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 73.372…

A: When an element has more than one isotope, then we will take average atomic mass to calculate…

Q: What do all isotopes of an element have in common? How do they differ? Provide an example to explain…

A: Each element of the periodic table has an atomic number and mass number. The atomic number is…

Q: An element consists of 1.40% of an isotope with mass 203.973 amu, 24.10% of an isotope with mass…

A:

Q: Write the isotopic notation for an isotope that has an atomic number of 35 and a mass number of 81.

A: Given   Atomic Number   = 35    Mass   Number  =  81  Isotopic Notation     = ?

Q: Silver has two isotopes that are common  in nature. Ag - 107 and  Ag - 109. What  makesthese  two…

A: The solution is given below -

Q: in nature, element X is found as a mixture of two isotopes, one with mass number 107 and the other…

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Q: An element has an atomic number of 41 and a mass number of 81. Using your determination as to…

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Q: Why is the atomic weight of chlorine 35.4527 in stead of exactly 35

A: Answer:  Since chlorine exhibits two isotopes Cl35  and  Cl37 in 3:1 ratio Hence we will take…

Q: What can happen as nuclei decay? A.The atom will donate protons and neutrons to another…

A: Nuclear decay is the process in which unstable nuclei is converted into stable nuclei by releasing…

Q: atomic number 119 and mass number of 252  where would this element be placed? What period would it…

A: Ununennium   Ununennium, also known as eka-francium or element 119, is the hypothetical…

Q: Element: Uranium Mass Abundance Abundance Number of Neutrons Number of Name of isotope (amu) (%)…

A:

Q: 26) An element has two isotopes. One has an atomic mass of 68.93 amu and a natural abundance of…

A:

Q: Estimate the average mass of element Y, if it is composed of two isotopes. The first isotope have a…

A: Average atomic mass = f1M1 + f2M2 +… + fnMn Where f = fraction representing the natural abundance of…

Q: Atomic #- 10 Mass #- 20 # of p+ = # of n - # of e-D # of valence e Atom Symbol- Name of Atom

A: Atom contains sub atomic particles  such as  protons , electrons and neutrons

Q: What are the factors that affect the average atomic mass of a mixture of isotopes?

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Q: A sample of the nonexistent element mythium consists of 25.59% of an isotope with mass number 580,…

A:

Q: 86. the symbol for the atomic number is Z the United States has the largest water footprint of…

A: Given:  Q 86 to 95 for True or False Q 96 to 100 for Matching

Q: A particular element exists in two stable isotopic forms. One isotope has a mass of 62.9296 amu…

A: Mass of one isotope (A) = 62.9296 amu.Abundance = 69.17% = 0.6917.Mass of second isotope (B) =…

Q: How do the mass number and the average atomic mass differ for a particular element?

A: There is difference between mass number and average atomic mass.

Q: A naturally occurring element identified by the symbol 'X', has the following isotopic composition…

A: The question is based on concept of atomic mass calculations. we have been given percentage…

Q: Element X has two isotopes, 28Q and 30Q. The relative atomic mass of X is 28.24. (a) Define the…

A:

Q: 13. 9.62 g of an element contains 0.240 mol. Identify the element. А. В В. Не С. Са D. Zr E. Both Ca…

A: Weight of an element = 9.62 g No. of moles = 0.240 mol

Q: What element is defined by the following information?    p+=20  n ^o=20   e^-= 20

A:

Q: Write the isotopic symbol for Lead-206.

A: • We need to write the isotopic symbol for Lead-206

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: 7. In cach pair of isotopes shown, indicate which one you would expect to be radioactive and why. a)…

A: Isotope is defined as same number of proton and electron but different number of neutron. For…

Q: Define the term the atomic mass unit?

A: Mass number of a substance is equal to the sum of number of neutrons and protons. One atomic mass…

Q: The weight of the hypothetical element Gg is 105.99 amu. Element Gg was found to have 3 stable…

A:

Q: Isotope 25Mg2+ has: Number of protons Number of neutrons Number of electrons Mass number

A: Given :-  25Mg2+  To calculate :-  number of protons  number of neutrons  number of electrons  mass…

Q: 17.A hypothetical element X is found to have an atomic mass of 37.45 amu. Element X has 2 isotopes,…

A: Given that mass of X-37 = 37.24   Let x be the mass of the other isotope  Fractional abundance of…

Q: The average atomic mass of Ga is 69.72. Naturally occurring Ga is composed of Ga-69, which has an…

A:

Q: Element X has two isotopes. The first isotope has a natural abundance of 80% and has a mass of 60…

A: Given : Abundance of first isotope = 80% Mass of first isotope = 60 amu Abundance of second isotope…

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

A:

Q: what are the properties of cathode rays and anode rays?

A:

Q: A hypothetical element Q (atomic mass: 142.61) consists of two stable isotopes: 45.3 % isotope A…

A: Relative abundance of isotope A is 0.453(45.3%) and hence, relative abundance of isotope B is 0.547…

Q: What is the relationship between an isotope’s abundance in nature and an element’s atomic mass…

A: Isotopes are atoms of same elements which have same atomic number but different mass number.

Q: A newly discovered superheavy element exists as two isotopes. One isotope has an atomic weight of…

A: Let the element be 100% X having iosotopes X1 and X2. Given: The atomic mass of X1, (M1)=408.5 atm.…

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.