two isotopes of rubidium occur naturally, Rb with mass of 85 and atomic number of 37 at 72.17% (84.91 amu) and Rb with mass of 87 and atomic number of 37 at 27.83% (86.91 amu). Calculate the atomic mass for rubidium using the weighted average mass method.

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: What is the atomic weight of element X of an atom X-23 which have an isotopic mass of 23.02amu and…

A: The Atomic Weight of element X ofX23⇒23.02 amu isotopic mass ,X25⇒25.14 amu isotopic mass .

Q: Is the statement inconsistent with Rutherford’s nuclear theory as it was originally stated? Why? The…

A: In his nuclear theory, Rutherford states that the nucleus of an atom contains most of the mass of…

Q: Which statement is true?(a) For a given element, the size of an isotope with more neutrons is larger…

A: For a given element, atoms having same atomic number with different mass number are known as…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why? The…

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: The weight of the hypothetical element Gg is 105.52 amu. Element Gg was found to have 3 stable…

A:

Q: A sample of element X contains 90% X-35, 8.0% X-37, and 2.0% X-38 atoms. The average atomic mass…

A: The average atomic mass = M1× M1(%) + M2× M2(%) +...... +Mn× Mn(%) / 100. Hence, M1 =35,M2= 37, M3…

Q: Calculate the atomic mass of the element: Mass                Abundance 22.1760             45.00%…

A:

Q: Gallium occurs naturally as 69Ga and 71Ga. Given the mass and abundance of gallium-69 (68.92 amu…

A: Given, Gallium occurs naturally as 69Ga and 71Ga and mass and abundance of gallium-69 is 68.92 amu…

Q: Determine the number of protons and the number of neutrons in isotope. 20882Pb

A: In 20882Pb :

Q: Only two isotopes of Sb (antimony, Z=51) are stable. Pick the most likely stable isotope from the…

A:

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

A:

Q: What letters are used to designate atomic number and mass number in isotopic notation of atoms?

A: There are different symbols are used to exhibit atomic Number and mass number of atoms. Atomic…

Q: Two isotopes of rubidium occur naturally, with 37/85Rb at 72.17% (84.91 amu) and 87/37Rb at 27.83%…

A: The average atomic mass of an element is determined by taking the weighted average of the atomic…

Q: Determine the relative atomic mass of chlorine if (with RAM 34.969) and (with RAM 36.966) have…

A: Atomic mass of Cl-35 = 34.969  Percentage abundance of Cl-35 = 75.5%  Atomic mass of Cl-37 = 36.966…

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: what is the diameter of the “atom” with a nucleus this size?

A:

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

A:

Q: write the electronic congratulations of calcium whose atomic number is 20 and mass number is 40.

A: Given,  calcium whose, atomic number is 20 and mass number is 40.

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: Relative abundance and atomic mass of the naturally occurring isotopes of hafnium: 5% - 176 amu 19%…

A:

Q: The astronaut then measures the abundance of magnesium on the new planet, obtaining the following…

A: Step → 1Average atomic mass = ∑ (% abundance x mass of isotope 100

Q: What fundamental force is responsible for holding together the subatomic particles of an atomic…

A: There are various physical forces acting all around us. Four fundamental forces are listed below:…

Q: A carbon-12 atom has a mass of 12.00000 amu. The mass of a proton is 1.00728 amu, and the mass of a…

A:

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

A:

Q: 256 116 But- The isotope above has type your answer. protons, type your answer. neutrons and type…

A:

Q: Calculate the average isotopic mass of krypton given: Mass / u. Percentage (%) 77.920 0.350 79.916…

A: Calculation of average is done by Mavg = ∑MiXi

Q: Boron exist as 2 stable isotopes in nature. Isotopic mass (in amu) and the percent abundance data…

A: According to our policy we should solve one question (If any subpart present then first three…

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

A:

Q: To how many significant figures would you need to express the mass of an thorium-228 atom in amu to…

A: Isotopic mass of thorium-228 is 228.0287411 amu Rest mass of an electron in amu = 0.00054858 amu

Q: One isotope has an atomic weight of 408.5 atm and a percent abundance of 23.0% while the other…

A: To calculate the atomic weight of the element, multiple the percent abundance with respective weight…

Q: If the heaviest isotope (A) is more abundant and the other isotopes (B & C) were less abundant,…

A: The periodic table's atomic mass is the average weight of all its isotopes. Average atomic mass of…

Q: Choose the appropriate pair of atoms that contain the same number of neutrons. (Example: ^13 6C =…

A: The number written on top left of the atom is known as mass number of atom. And the number written…

Q: What is the relationship of hydrogen's mass to hindenburg tragedy?

A: The Hindenburg tragedy is the result of combustion of hydrogen. Water (vapor) is obtained as…

Q: Copper has two stable isotopes with the following atomic masses: copper-63 (atomic mass = 62.9296…

A: Given: average atomic mass of copper = 63.546 amu atomic mass of copper-63 = 62.9296 amu atomic mass…

Q: A soft silvery metal has two naturally occurring isotopes: mass 84.9118, accounting for 72.15% and…

A: Answer

Q: 8. Complete the following table with the appropriate data for each isotope given (all are neutral…

A:

Q: Complete the following by placing the missing words correctly. The atomic theory was given by…

A: The atomic theory was given by  Dalton. Protons is a  subatomic particle . The atomic number gives…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why? The…

A: Atom is considered as the smallest particle of matter. There are various models for describing the…

Q: An aluminum atom has an average diameter of about 3.0 * 10- 8 cm. The nucleus has a diameter of…

A: Given, average diameter of aluminum atom = 3.0 x 10-8 cm            diameter of nucleus = 2.0 x…

Q: Calculate the average atomic mass of Ga. Naturally, occurring Ga is composed of 60.0% 69 Ga, that…

A: Given: Atomic mass of 69-Ga is 68.911. Atomic mass of 71-Ga is 70.931. Percentage of 69-Ga is 60.0…

Q: mass е relative (amu) abundance 111.9 90.3% 118.9 9.7%

A: Average Atomic mass = = (M1X1 + M2X2)/(X1+X2) = (111.9×90.3 + 118.9×9.7)/100 = 112.579 amu = 113

Q: History Bookmarks Window Help ew A east.cengagenow.com ral Chemistry I X QWLV2 | Online teaching and…

A:

Q: The actual mass of a 17Cl atom is 36.9659 amu. Calculate the mass deficiency (amu/atom) for a 17C…

A: We have to calculate the mass deficiency of 1737Cl

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, Ilocated in the outer Solar…

A: As it is given the mass of isotope and it's relative abundance. So we can easily calculate the…

Q: In 1909, a team of British scientists led by Ernest Rutherford, carried out the Gold Foil Experiment…

A: Gold Foil Experiment helped to determine the arrangement of particles in the atom.

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

A:

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.