A certain element consists of two stable isotopes.The first has a mass of 68.9 amu and a percent natural abundance of 60.4 %.The second has a mass of 70.9 amu and a percent natural abundance of 39.6 %.What is the atomic weight of the element?  amu

Q: Fill in the missing information: Symbol Atomic # Mass Number # Protons # Electrons # Neutrons Charge…

A: Since, For the given notation of the element, Number of proton = Atomic number Number of neutron =…

Q: Calculate the atomic mass of element "X", if it has 3 naturally occurring isotopes with the…

A:

Q: A mass of 41.6 g of an element is known to contain 6.59 x 1023 atoms. What is the atomic mass of the…

A:

Q: Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the…

A: Given : element X has 2 isotopes with mass and abundance as X-45 :  mass = 44.8776 amu and abundance…

Q: Mass Name Nuclear Symbol # Protons # Neutrons # Electrons Number selenide magnesium-26

A: The nucleus of  an atom consist of protons and neutrons where as electrons lie out site the nucleus.

Q: There are only two naturally-occuring stable isotopes of copper, the masses of which are listed in…

A: Answer:

Q: Why is an alpha particle written as a helium (He) nucleus?

A: Alpha particle is produced in an alpha decay of radioactive elements like uranium. We are to find…

Q: Copper, which has an average atomic mass of 63.546 amu, has two stable isotopes: copper-63 and…

A: Given,Atomic mass of Copper-63 = 63.546 amuAbundance of Copper-63= 69.15%

Q: What is the atomic number for an element whose mass number is 196, which contains 116 neutrons per…

A: Given : mass number of element =196.                   Number of neutrons =116 To find : Atomic…

Q: Copper has an isotope with an atomic mass of 62.93 and an abundance of 69.17%. A second isotope has…

A:

Q: A particular element exists in two stable isotopic forms. One isotope has a mass of 34.969 u (75.77%…

A: Given,Mass of one isotope (m1) = 34.969u.Abundance = 75.77% = 0.7577.Mass of second isotope (m2) =…

Q: This element has only two naturally occurring isotopes, in which the lighter isotope has an…

A: Given  Abundance of lighter isotope( AL )          = 19.9% Then abundance of heavier isotope (AH) =…

Q: Which of the following concerning atomic mass is/are correct? 1. The atomic mass listed on a modern…

A:

Q: Consider an element Z that has two naturally occurring isotopes with the following percent…

A: average atomic mass= ∑%abundant×Molar mass/100 using this we can calculate the average atomic mass…

Q: Naturally occurring uranium consists of two isotopes, whose masses are shown below: Isotope Mass…

A:

Q: An element has two naturally occurring isotopes. One has an abundance of 37.4% and an isotopic mass…

A: Two naturally occurring isotopes.i. Abundance of 37.4% and an isotopic mass of 184.953 amuii.…

Q: A hypothetical (fake) element has 2 naturally occurring isotopes. Isotope #1 has a mass of 185.8410…

A:

Q: Gallium has two naturally occurring isotopes. One of them, gallium-69, has a mass of 68.925581 u and…

A: Gallium has two naturally occurring isotopes. Mass of Gallium-69  = 68.925581 u Percent Isotopic…

Q: Consider a hypothetical element, "X". Suppose "X" has two naturally occurring isotopes with the…

A:

Q: Two isotopes of boron are found in nature: 10B has a mass of 10.01 amu, and 11Bhas a mass of 11.01…

A: Given: The atomic mass of 10B, an isotope of boron, is 10.01 amu. The atomic mass of 11B is 11.01…

Q: Lithium has 2 stable isotopes Li-6 and Li-7. One of them has an abundace of 92.5% and the other has…

A: Since the atomic mass of any element is average atomic mass of its isotopes. hence the atomic mass…

Q: A hypothetical element exists as two isotopes: I = 92.00 amu and II = 98.00 amu. If the atomic mass…

A: Suppose fraction of isotope I = A Fraction of isotope II = (1 - A) Atomic mass = A x atomic mass of…

Q: A mass of 7.86 g of an element is known to contain 2.31 x 1023 atoms. What is the atomic mass of the…

A: In this question given  Number of atom , and mass of elements

Q: Boron has only 2 naturally occuring isotopes. The mass of boron-10 is 10.01294 and the mass of…

A: Given : Mass of boron-10 is 10.01294 amu and boron-11 is 11.00931 amu. Assuming abundance of…

Q: An isotope of xenon has an atomic number of 54 and contains 77 neutrons. What is the xenon isotope’s…

A:

Q: Which atomic particles are equal in mass? O neutrons, protons, and electrons protons and electrons O…

A: Atomic particle is a smallest particle. It consists of electrons, protons, and neutrons. Electrons…

Q: Bromine has two naturally-occurring isotopes. 79Br has a mass of 78.9 amu and accounts for 50.3% of…

A: Given : There are 2 naturally occurring isotopes of Bromine. Mass of Isotope 79Br = 78.9 amu…

Q: There are two isotopes of Beryllium: Be-9 and Be-11. A chemist examines a sample of 250 Beryllium…

A: If A1 , X1 and A2 , X2 are atomic mass and percentage abundance of two isotopes of an element then…

Q: There are 3 stable isotopes of Argon: Argon-36, Argon-38, and Argon-40. What would atoms of these…

A: Isotopes are the atoms of same element with same atomic number but different mass numbers.  As…

Q: Isotopes are elements of the same type with different numbers of resulting in differing .

A: number of protons = atonic number  number of electrons = atomic number (for a neutral atom)  number…

Q: Calculate the atomic mass of silver if silver has 2 naturally occurring isotopes with the following…

A: Average Atomic Mass:-Mavg = M1 n1 + M2 n2n1 + M2M1 & M2 are atomic masses of isotopes 1 and 2n1…

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

A:

Q: the atom bromine79 has an isoptopic mass of 78.91 while bromine 81 has an isotopic mass of 80.91.…

A: Given, Atomic Mass of B79r = 78.91 amu Atomic Mass of B81r = 80.91 amu

Q: A certain element consists of two stable isotopes. The first has a mass of 113 amu and a percent…

A: To find out the mass of the element, multiply both mass of isotopes and their natural abundance. You…