Directions: Identify the element described in each statement. ___________1. An element with 26 protons and 30 neutrons. ___________2. Has a mass number of 11 and an atomic number of 5. ___________3. Has 117 neutrons and an atomic number of 78.

Q: the age of fossils can be trace by using isotopes c12 and c14 called carbon dating for generations.…

A: Given statement is : The age of fossils can be trace by using isotopes c12 and c14 called carbon…

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: Write a balanced nuclear reaction for the decay of tin-127 by beta particle

A:

Q: a. Fr-218 decays by alpha decay. What are the atomic symbol and mass number of the product? Product:…

A: Write decay product of the given question---

Q: Calculate A E in kilojoules per mole for the following reaction: 230 Th→ He + 6 Ra 90 Atomic masses:…

A: The reaction considered is alpha decay of Th-230. 230Th90 -----> 4He2 + 226Ra88 The energy change…

Q: The dosage of technetium-99m for a lung scan is 20. uCi /kg of body mass. How many millicuries of…

A: Given:  Dosage = 20 µCi/kg  Weight of person = 53 kg    To find: Number of millicuries

Q: Choose all of the following that are true about fusion: Occurs in stars like our Sun. O Nuclear…

A: 1) This statement is true. Fusion do occurs in our stars like sun. 2) This statement is false.…

Q: Consider the balanced reaction 8 A+ 3 B →7C+8 D. If 8.751 grams of B (MW = 46.44) are consumed, how…

A:

Q: How many protons and neutrons are present in the following nuclide:     2041Ca  ?How many protons…

A: The correct answer is given below

Q: Toz 11 ra 02

A:

Q: Consider the element Ag (p=47, n=61) with a nuclear mass of 1.79124 x 10-22 g. (Given: mass of…

A: given  Ag (p=47, n=61) with a nuclear mass of 1.79124 x 10-22 g. mass of proton = 1.67262 x 10-24 g;…

Q: Now that you have the contribution from the X-19 isotope (2.715) and from the X-21 isotope (18.00),…

A: Given the contribution from the X-19 isotope = 2.715 amu contribution from the X-21 isotope = 18.00…

Q: 3H,SO, Al2(SO4)3 + 3H2 AL,(SO.), NR NiCl, -NR H,SO, ZnSO4 + H2 SnCl, --MgCl2 + Sn for Halogens ch…

A: In the balanced chemical reaction,   The  number of atoms of each element in product side is equal…

Q: What amount of energy is needed to transform 7.55 grams of H2O at 57°C to 114°C?

A: The energy needed to raise the temperature is given by the equation, Q=m×c×∆TQ→energy neededm→mass…

Q: he 'H nucleus is composed of a single proton and therefore has a relative mass loss of 0 g/mol.…

A:

Q: (Q100) The diameter of a titanium-46 nuclide is 7.214 fm (1 fm = 10-15). Given that the mass of…

A: The density of a compound can be determined by the ratio between the mass of the compound to its…

Q: QUESTION 4 From the Coursebook: What is a useful marker point for the Global Anthropocene? When…

A: A question based on nuclear chemistry that is to be accomplished.

Q: 7.2.5 moles of Ni-56 initially exist. Find the number of moles of Co-56 and Fe-56 after 20 days.…

A: please put the link properly(extra information),I will solve your doubt for sure. Thanks and happy…

Q: Consider the element Ti (p=22, n=26) with a nuclear mass of 7.94869 x 10-23 g. (Given: mass of…

A:

Q: ACTIVITY # 5 DIRECTIONS: COMPLETE THE TABLE: Element or lon Atomic umber Mass Number of Protons of…

A:

Q: Activity 1: Subatomic Particles Directions: Complete the table below by supplying the correct…

A: Given,

Q: Bismuth-206 is a radioactive isotope that undergoes alpha decay. Bi A) Write out a balanced equation…

A: Isotopes are those elements which have same atomic number but different mass numbers. There are many…

Q: Reset Help 8 1. An atom of aluminum with a mass number of 24 and an atomic number of 13 has a total…

A: For an element,                              Atomic number  = Number of electrons  =  Number of…

Q: Discuss the reasons why 226Ra (Z=88) is radioactive element while 56Fe (Z=26) is a stable element.…

A: Radioactive elements are composed of atoms in which their nuclei are unstable and losses their…

Q: Choose the best definition of an isotope from this list A nucleus of an element which is unstable…

A: The isotope of an element is the same atomic number with the difference in mass numbers. The atomic…

Q: Kelerences a. Be-7 decays by gamma emission. What are the atomic symbol and mass number of the…

A: The correct answer about radioactive decay is given below

Q: 1. Play with the simulation to determine: a) Which particles affect the stability of the atom? b)…

A: Stability of an atom generally means about its energy of energy high atom is unstable (radioactive…

Q: The mass defect for the reaction shown below is amu. The atomic masses are 3He (3.0160), 4He…

A: The considered reaction is, 2He23→He24 + 2 H11

Q: Disintegrate or decay mean that radioactive elements disappear as they emit radiation and are…

A: The given statement is true

Q: Which type of radiation—alpha, beta, or gamma—is likely to fog a film that is sensitive to X rays?

A: X-rays can be used to examine most areas of the body. They're mainly used to look at the bones and…

Q: Which Isotope has the same number of neurons as phosphorus-31

A: Isotopes are the elements having same atomic number but different mass number i.e. different number…

Q: verbe ins acesitas ities/action nation of ead 9. C,H18 + O2 audience nroject. 10, + H,0 > 10. FeCl,…

A:

Q: Synthesizedwas Xept Fg (440,37 a mot). the पणा क नष ने 5 0 लही %

A: Given compound = XePtF6 Molar mass of compound = 440.37 g/mol Molar mass of platinum = 195.08 g/mol…

Q: 8. True or False (use your periodic table/data sheet when appropriate) a. A Geiger counter detects…

A: (a) A Geiger counter, measured the radiation when the radiation collides with gas molecules it…

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: Activity 2: Isotope Notation and Symbols The composition of any atom can be represented in shorthand…

A: Isotopes have same atomic number but different mass number.  In representation of an element…

Q: Which one of the following statements is not correct?   a. Generally, the number of neutrons in a…

A: Introduction : A nuclide is identified by a specific number of neutrons and a specific number of…

Q: What proportion of the 14C present in Otzi's body when he died is still there today? When he died,…

A: The half-life time of carbon-14 is about 5,730 years.  Thus a sample that had 1/4 of its original…

Q: e polonium-214 ndergo vest nossible coefficients.

A: In the nuclear reaction,  Mass number and atomic number is same in both sides

Q: Studying the decay of radioactive isotopes in dead organisms helps scientists to identify fossilized…

A: A nuclear reaction involves the conversion of the nucleus with the emission of certain nuclei or…

Q: 5. One nuclide in each of these pairs is radioactive. Predict which is radioactive and which is…

A:

Q: 10 Write the balanced nuclear equation for the radioactive decay of plutonium-239 by alpha emission

A: The balanced chemical equation is generally written by using law of mass conservation.Among…

Q: of neutrons found in: 245BK+5

A:

Q: What are the elements formed in big bang nucleosynthesis? 2. What are the elements formed in Stellar…

A: The process of formation of the new nuclei from already existing ones is called nucleosynthesis. It…

Q: 2. A certain OTC antacid contains 800 mg of calcium carbonate (CaCO3) per tablet. How many mEq of…

A:

Q: Answer the following. Explain and Show your solutions. 1. The alpha decay of what isotope of what…

A:

Q: 1. Write a nuclear equation for the alpha decay of Pa. 2. Write a nuclear equation for the beta…

A: The nuclear disintegration process that emits alpha particles is called alpha decay. The symbol for…

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

A: • The given isotope is oxygen-14 which states that the mass number of oxygen-14 is 14   • Oxygen is…

Q: List three of the more important reasons or trends explaining why some atoms are radioactive and…

A: 1. The unstable ratio of protons to neutrons In small atoms, the ratio of protons to neutrons is…