The cobaltisotope(t1 / 2 = 5.28yr) C^60is produced at a rate of 10 ^ 12atom / sec for a period of 2yr. Find the number and mass of atoms of this isotope.

Q: For each pair of elements listed, predict which one has more stable isotopes. b) For Se b) Co or Ni…

A: (a) F or Se : Atomic number of F = 9, so it has 9 protons, and its mass number is 19. Atomic number…

Q: 76 CHAPTER 2 Atoms, lons, 2.6 Write nuclide symbols of the form "X for th represented in Figure…

A: Every nuclide has an atomic number (Z), the number of protons with inside the nucleus, and a mass…

Q: For two isotopes Unk-45 and Unk-47 with relative abundance’s of 12.3% and 87.7%, respectively, which…

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Q: neutrons/cm2.s), calculate the number of neutrons captured per second by 1.0 cm-2 of the

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Q: How many protons, neutrons, and electrons are in the following atoms: (a) ²⁸Si; (b) ⁶⁰Ni; (c) ⁸⁵Rb;…

A: Note : As per our guidelines we are supposed to answer first 3 parts .Please resubmit the other…

Q: 10. For the Isotope 6731Ga A. What is the atomic number? B. What is the mass number? C. What is the…

A: Question 10: Given isotope is: 6731Ga. What is its atomic number? What is its mass number? How many…

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

A: In 20882Pb :

Q: 2.28 The following radioactive isotopes are used in medicine for imaging organs, studying blood…

A: Isotopes are the nuclides which contain same atomic number but different mass number. Atomic number…

Q: 9. +ie + -> +1е 10. Си + н 63 29 64 30 0Zп + 11. н + H + in ->

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 4. 49 Cr-> 49 V + 24 23 5, 238U- 23A Thị 92 90 6. 214 Bi-> 214 Po+ 83 84

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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: Which one of the following is an isotope of 151Eu? a. 151 Eu3+ b. 153 Eu c. 151 Eu2+ d. 151 Gd

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Q: Fill in the information missing from this table. nuclide protons neutrons Z A 0 67 98 0 0 0 0 0 0 0…

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Q: 1. Indi cate of protons and nevutrons in the following nuclei: the number a) 5 Mn 22

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Q: Identify the missing species: 246Cm + 12C -----> 4 'n + 238 C f O 257 No O 258 No O 254 Th O 254 No

A: This is a fusion reaction. The 246Cm and 12C combined to form a species and four neutrons. Since it…

Q: Fill in the information missing from this table. nuclide protons neutrons Z A 0 0 33 75 0 0 12 14 0…

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Q: 235U + 'n93Kr + 140BA + 3 'n Consider the substances in the reaction: Uranium-235, Krypton-93, and…

A: •Any element can be represent as :-                         A                            A → mass…

Q: What is the name of particle X in the following reaction? 232/90 Th -> 228/88 Ra + X

A: Henry Becquerel was the one who had started working on some elements and he found some elements that…

Q: _____→233 U 92+0 e -1 Express your answer in isotopic notation.

A: According to the law of conservation of atomic mass and number, the unknown element can be…

Q: 3 Which pair of symbols represents nuclei with the same number of neutrons? 56Co and 58CO S7Mn and…

A: Given element are Element Atomic number (From periodic table) Co 27 Fe 26 Ni 28 Mn 25…

Q: While studying the properties of a sample of material obtained from an excavation site, you discover…

A: A gamma ray, or gamma radiation (symbol γ or. ), is a penetrating form of electromagnetic radiation…

Q: Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that…

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Q: Which of the following species is an isotope of 79Br? A) 40Ar+ B) 79Se c) 79Br- D) 80BR E) 3452-

A: Isotopes :-  Atoms of the same element having same atomic number but different mass numbers are…

Q: 234/91 Pa------> _________ + 234/92 U?

A:

Q: How many protons are contained in the isotope: 22 Ne 10

A: Each atom is made up of sub-atomic particles such as the proton, neutron, and electron. For any…

Q: 2. In each pair of isotopes, indicate which one you would expect to be radioactive. Support your…

A: a. 42Mo95 : No. of protons = 42(even). No. of neutrons = 95-42 = 53(odd).  43Tc92 : No. of protons =…

Q: The fuel for Nuclear Reactors involves the decay of Uranium-235. 235U + 'n ®93Kr + 140Ba + 3 1n…

A: An element (X) is represented as: XAtomic number→ZMass number→A Here, A represents mass number or…

Q: Write the following isotopes in nuclide notation (e.g., "14/6 C")(a) oxygen-14(b) copper-70(c)…

A: Isotopes are the species which contain different number of neutrons but same number of protons and…

Q: The fuel for Nuclear Reactors involves the decay of Uranium-235. 235U + 'n →93Kr + 140Ba + 3 'n…

A: Atomic number is the number of protons present in an atom. Atomic mass is the sum of number of…

Q: mitted 130 120 110 100 90 80 70 60 50 • Stable Radioactive 40 30 20 10 10 20 30 40 50 60 70 80 90…

A: N/Z is the ratio of no of neutrons to no of protons of an atom. It signifies which atoms will…

Q: A general formula of nucleus is given as AZX2+; here A is mass number, and Z is atomic number.…

A: The protons and neutrons in the nucleus of an atom are called as nucleons. Protons are positively…

Q: Atoms X, Y, Z, and R have the following nuclear compositions: 412 R 410 Y 183 412 Z 186 410 X 186…

A: Isotopes of any element have same atomic number but different atomic mass. i.e. isotopes of any…

Q: Which of the following atoms has the same number of neutrons as ⁵⁹Ni? A) ⁵⁷Co B) ⁵⁸Fe C)…

A: The following atoms that has the same number of neutrons as ⁵⁹Ni are to be determined - A) ⁵⁷Co B)…

Q: mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken…

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Q: which of the isotopes in each of the following pairs is more abundant. (a) 1°B or "B (b) Li or 'Li…

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Q: Determine the number of protons and the number of neutrons in isotope. 22286Rn

A: An element consists of same type of atoms. An atom is composed of certain sub-atomic particles;…

Q: Which of the following has a different number of neutrons? a.123Sb b.125I c.120Cd d.122In

A: Which of the following has a different number of neutrons?

Q: Identify the oxidizing agent in the chemical reaction                    5Fe+2(aq) + MnO4-(aq) +…

A: The chemical equation :  5Fe2+(aq) + MnO4-(aq) + 8H+(aq)  ----> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)…

Q: Determine the number of protons and the number of neutrons in isotope. 33P15

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Q: 13. What is the missing particle? 2Am + He → 2¿n + B. 2Bk 243 95 A. 2Bk 244 97 245 97 C. 2Bk 246 97…

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Q: Which of the following atomic isotopes contains the fewest neutrons? Select one: a. 30Si b. 27Al c.…

A: The number of neutrons is the difference between the mass number and atomic number.   So , to get…

Q: 238 What element is synthesized from the reaction: 92U +15n > 7°-1B + _? 253 85At 25399Et 146100FM…

A: In this question, we will synthesized the element which have atomic number, element symbol and mass…

Q: I3 write a hypothesis for how you think that decay constant is related to the concentration of the…

A: The decay constant(λ) regulates the rate at which the total number of nuclei declines. Unknown…

Q: 218 Po→218 At +X 84 1K-Ar +Xn→_{ß+X 210 Bi→206 T1+X 83 81 ip

A: The emissions of the most common forms of spontaneous radioactive decay are the Alpha particle,the…

Q: (а) х + 9B 244Pu 94 → X + He 238 92 (с) х "N + je

A: when radioactive nuclei decay it Emmitts radiation,  in the forms of high energetic rays alpha, beta…

Q: 165 21. Identify the neutron-to-proton ratio for the isotope 67H0 and determine if the isotope is…

A: Identify the neutron-to-proton ratio in the given nuclide--

Q: Gold is very malleable which means it can be pounded into very thin sheets. Decorative gold leaf can…

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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.