The radioactive element carbon 14 has a 1/2 life of 5750 years a scientist determined that the bones from a mascot on had last year to 2.8% of their cardboard 14 how old were the booms at the time they were discovered wrong to the nearest integer as needed

Q: The number of protons in the nuclide neptunium-237 Express your answer as an integer.

A: The mass number is the sum of the number of neutrons and number of protons. The atomic number is…

Q: The radioactive element carbon 14 has a 1/2 life of 5750 years a scientist determined that the bones…

A: According to the question, the radioactive element C has half life of 5750 years.  Lost percentage…

Q: 2/17/2021 Chapter 2 Concept Check on Atoms and Isotopes Chapter 2 Concept Check on Atoms and…

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Q: you are designing a rocket engine th uses a mixture of hydrazine and water as a propellant. this…

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Q: -23 An oxygen atom has a mass of 2.66 x 10 g and a glass of water has a mass of 0.050 kg. Use this…

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Q: g and a small airplane has a mass of 5000. kg. An aluminum atom has a mass of 4.48 × 10 Use this…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 4. Write Lewis structures for the following molecular formulas, and encircle any lone pairs (pairs…

A: We have to draw  the lewis structure of following  given molecules,  And also we have to determine…

Q: Under certain conditions, the substance ammonium chloride can be broken down to form ammonia and…

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Q: Is the size of chlorine smaller or larger than fluorine? Justify your answer.

A: Given, size comparison between chlorine and fluorine.

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: 8A 1A H 2A 3A 4A SA 6A 7A He Lu Be BCNOF Ne Na Mg 38 48 5B 6B 78 r BB 18 28 AI si PSCI Ar K Ca Sc TI…

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Q: In the early 1900s, Ernest Rutherford produceda beam of very small positive particles and directed…

A: The extremely small, invisible, and indestructible fundamental particle of matter is known as an…

Q: Q11:. The size of the nucleus is experimentally determined using Rutherford's a-scattering…

A: Density is a measure of mass per volume. The average density of an object equals its total mass…

Q: What if a new element, Tyserium (Ty), was discovered and was found to have two isotopes, Ty-331…

A: The average Atomic mass of any element is the average of atomic masses of different isotopes present…

Q: 23 An oxygen atom has a mass of 2.66 x 10 g and a glass of water has a mass of 0.050 kg. Use this…

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Q: Given the following data 2 CIF(g) + O2(g) Cl2 O(g) + F20(g) 2 CIF, (9) + 202 (g) C, O(g) + 3F20(g)…

A: Interpretation: From the given reaction, the ∆H of the given equation is to be calculated.

Q: What is the chemical element? X

A: Here we have asked about the information for the chemical element 'X'. We can tell about this as…

Q: 10. In what year did Albert Einstein prove the existence of atoms Ernest Rutherford do his Gold Foil…

A: it was Albert Einstein who, starting in his epochal year of 1905, published several papers that…

Q: What is the wavelength, in nanometers, of light with an energy content of 2.89 x 102 kJ mol-1?

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Q: ategies, you n of ▼ Part A If two such generic humans each carried 1.5 C coulomb of excess charge,…

A: When two electric charges q1 and q2 are placed at a distance(r) from each other , the electrostatic…

Q: If the nucleus of an atom took up 50% of the volume (instead of 0.1%) what do you think the scatter…

A: This question shares relevance with Rutherford's gold foil experiment which was a milestone point…

Q: -23 An aluminum atom has a mass of 4.48 x 10 g and a small airplane has a mass of 5000. kg. Use this…

A: Given: The mass of one Al atom = 4.48×10-23 We have to find the number of moles of aluminum atoms in…

Q: An oxygen atom has a mass of 2.66 x 102 g and a glass of water has a mass of 0.050 kg. -23 Use this…

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Q: Go to ptable.com and see the listed atomic mass of Oganesson. Determine the percent error based on…

A: Given that, the actual atomic mass of Oganesson is MA = 294 g/mol. The predicted atomic mass of…

Q: A new element is discovered that has a mass of 3.2 x 102 u for15 atoms. What is the atomic mass? A.…

A: The mass of number of atoms is called the atomic mass of the atom. Here, the number is called…

Q: 2 Al + 3 H,SO, 6. How many grams of hydrogen gas are produced with 0.88 moles of aluminum sulfate? 3…

A: We can determine the mass of Hydrogen gas produced from the balanced equation.  The balanced…

Q: can you expand the process of how did you get the number 0.22152

A: To expand the process of getting 0.222152

Q: Can you show the calculations step by step? Where did 3.1e-5 came from

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Q: A student is running an experiment in which 71.1 grams of MnSO, is needed, but the only jar of…

A: Given: The mass of MnSO4 required for performing an experiment is 71.1 g.

Q: d) (8 points) The element with one of the highest known densities is Osmium (Os), with a reported…

A: Density of Os = 22610 kg/m3  1 pound = 454 g  Volume of penny = 360 mm3

Q: You time travel 100 years into the future and learn that several new elements have been discovered,…

A: Given compound = A5O12  Given mass of compound = 175 g  molar mass of A = 352.44 g/mol molar mass of…

Q: Beryllium (Be) is in the box on the periodic table shown. Lithium (Li), boron (B), and carbon (C)…

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Q: proton ratio describes a radioactive element's half-life. up this concept because they wanted to…

A: We will choose Correct option