Element X has two naturally occurring isotopes. If 72% of the atoms have a mass of 85 amu and 28% of the atoms have a mass of 87 amu, what is the atomic mass of element X? Show

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Q: 14. In the equation 22890Th 22891Pa + X which particle is represented by X? Accessibility. Good to…

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A: For Cu-63, Percentage = 69.17 % Fraction = 69.17100 = 0.6917 Mass = 62.93 amu

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Q: A fictional element X has 2 stable isotope, X-94 and X-96. The exact mass of X-94 is 94.000215 amu…

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Q: Match the Beta decay products of the following elements: Drag the boxes to match the answers 76Os…

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A: Given: Element X undergoing a chemical reaction.

Q: This is the heaviest naturally occurring element  A) 87Fr B) 94Pu C) 92U D) 103Lr E) 102No

A: This is the heaviest naturally occurring element-

Q: True or False? Atomic weight is equal to the number of protons and neutrons in the nucleus.

A: Given : Statement "Atomic weight is equal to the number of protons and neutrons in the nucleus"

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: Define and explain the difference between molecular weight and atomic weight. With examples. 5.…

A: Atomic mass is the mass of an atom.

Q: 247 96 Column A 1. 2. 3. Cm →He + 4X What is the atomic mass of the new atom? What is the atomic…

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A: Given,  The nuclear bombs released energy = 12.4 kilotons of TNT = 1.44 × 1014 J.  The mass of…

Q: Radon is a radioactive gas that can cause lung cancer. It has been detected in the basement of some…

A: Atomic number of radon Rn = 86  Mass number of Rn-220 = 220

Q: A sample of silver contains 45.9 x 1027 atoms of silver. Find the mass of silver in kilograms.

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Q: 13. Which pair represents isotopes? a. He and »He b. seFe and sa:Mn c. Si and suP 14. Which pair…

A: Identify isotopes pair among them --

Q: 3. Fill in the blanks. Add any missing symbols and'or numbers to the ateomic symbol. (Assume all…

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Q: USE THE PERIODIC TABLE BELOW! 1. nitrogen 13 decays by alpha emission and a new element is formed. -…

A: Alpha Decay: releases He molecule Electron capture: reduces the atomic number and kills on proton

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A: A question about atomic structure, which is to be accomplished.

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A: Given : Diameter of Rh atom = 2.7 X 10-8 cm And the distance to be covered = 6.0 μm = 6.0 X 10-4 cm…

Q: What is radioactivity? Indicate whether you agree or disagree with the following statement and…

A: Radioactivity is a physical phenomenon  where an element or isotopes emitting radiation…

Q: Convert the mass of one electron (m=9.10*10^ -31kg) to energy. Recall the speed of light c = 3.00 *…

A: Given that, m=9.10×10-31 Kg  c= 3.00×108 m s-1 Energy E = ?

Q: number) in the second box, and the element, with charge if necessary, in the third box.) (a)73Ga →…

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A: Welcome to bartleby!

Q: 11. At death, a nobleman in ancient Egypt was mummified and his body contained 1.4 x 10 3 g of…

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A: Concept is based on Ernest Rutherfords atomic model

Q: A student looked up the naturally occurring isotopes of bromine and found the following information:…

A: Atomic mass of an element is the number of times an atom of that element is heavier than an atom of…

Q: Consider the following data: isotope                  atomic mass                    abundancy%…

A: ANS. Option B) 31.19 amu

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A: Atomic structure schematic

Q: How do different isotopes of nitrogen behave similarly or differently from each other in a chemical…

A: Isotopes are elements having same number of protons but different number of neutrons.

Q: 14. In the equation 228 90Th 22891PA + X which particle is represented by X?

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Q: -22 The mass of a certain atom is 2.086 x 10 g. This is the same mass as 2.086 x 10-16 mg. 2.086 x…

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Q: Naturally occurring silver (Ag) consists of two isotopes. One of the isotopes has a mass of…

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Q: Find the number of electrons and neutrons in the following: 207Pb+2 Electrons Neutrons

A: Nucleus is consisting of protons and neutrons. Number of neutrons = Atomic mass - number of protons

Q: An element has 2 isotopes : The 1st isotope has the atomic mass of 154.2 amu and abundancy% of…

A: Recall the data, 1st isotope => 154.2 amu, %abundance=81.20% 2nd isotope=> 155.7 amu,…

Q: Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the…

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Q: A hypothetical element has two stable isotopes: one isotope has a mass of 106.9051 amu with an…

A: We have to calculate the average atomic mass of element.

Q: In the equation used to determine the energy of the particles described in question (11), E = hc/λ,…

A: The given equation is  E = hc/λ

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Group 14 Elements

The following elements come under group 14 of the periodic table.