Nucleus Questions and Answers

4 What modern developments stem from Einstein s E mc equation Explain

2 In your opinion would Einstein have developed his Big Idea without the work of Faraday Lavoisier du Chatelet or Maxwell Explain

5 15 pts In a nuclear reactor neutror Here is just one way that Uranium c n 235U 148La Br a Fill in the and write down the full element name using a periodic tabl 27B on Tophat including a periodi

What is common in all nuclear reactions? They always share or transfer electrons. They always release energy. They always require energy. They always form a new element

In Einstein's famous mass-energy equivalence equation, what does c represent? speed of light mass deficit the photon nuclear charge

What is the missing product from the fusion of hydrogen? 11H+11H→________+01e Select one: ²1H 22H 32He 31H

What is lost from the nucleus of an atom when it emits an alpha particle? Select one: O two protons and two neutrons O two neutrons only O two protons and two electrons O two protons only

3. For each example below, predict if the bonding will be ionic or covalent. i. Ca with Cl ii. C with H iii. Carbon monoxide iv. KBr v. SO₂ vi. Magnesium iodide

What is the rest energy of a hydrogen atom whose atomic mass is 2.014101778? (mproton=1.0078251, mneutron = 1.0086649, c2=931.5 eV/u) 940 eV 1879 eV 1876 eV 939 eV

There are 2 naturally occurring isotopes of Lithium: Li (6.015 amu) and 'Li (7.016 amu). What are the abundances of each isotope?

5.) Compare the three levels of energy of the alpha particle for gold. Give your best explanation why there were different interactions between the alpha particle and the nucleus.

6.) Did the paths for the Calcium atom with max, halfway and min alpha particles exhibit the same changes as the gold atom?

4. Which of the following can be used to describe the process of nuclear fission? Check all that apply. a chain reaction occurs to sustain the reaction it results in smaller still radioactive nuclei it takes only one neutron to start a reaction it takes place at relatively cool temperatures

Which of the following can be used to describe the process of nuclear fusion? Check all that apply. it takes place at relatively cool temperatures it results in larger nuclei than the parent it takes place at relatively high temperatures it is the opposite of nuclear fission

Which of the following atomic equations are accurate? (select all that apply) A=X+N N=Z-A A = Z+N Z = A + X

15. Which scientist was awarded the Nobel Prize for his work with quantized energy? Heisenberg Bohr Planck Oppenheimer

Calculate the nuclear diameter of 238 U. Express your answer to two significant figures and include the appropriate units.

If an electron in hydrogen atom jumps from 3 to an orbit of level an orbit of level n n = 2, emitted radiation has a frequency______ (R=Rydberg's constant, C-velocity of light). (A)3RC/27 (B)RC/25 (C)8RC/9 (D)5RC

The value of Planck's constant is 6.63 × 10-34 Js .The speed of light 3 x 1017 nm s-1 the wavelength in nanometer of a quantum of light with frequency of 6 x 10¹5 s-1 ?

Choose the wrong statement: A Alpha particles can be scattered by Gold nucleus B X-ray can be diffracted by crystals C UV radiation can cause Photoelectric effect D Electrons cannot be diffracted by crystals

The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio 1:7 in a sample of a given rock. The age of the rock is estimated to be A 40 years B 60 years C 80 years D 100 years

A certain mass of Hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u . The energy liberated per u is (given 1 u = 931 MeV ) A 2.67 MeV B 26.7 MeV C 6.675 MeV D 13.35 MeV

The piece of wood from a recently cut tree shows 20 decays per minute. A wooden piece of same size placed in a museum (obtained from a tree cut many years back) shows 2 decays per minute. If half life of C¹4 is 5730 years, then age of the wooden piece placed in the museum is approximately A 10439 years B 13094 years C 19039 years D 39040 years

The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0MeV, respectively. When two deuterium nuclei fuse to form a helium nucleus the energy released in the fusion is: 23.6MeV 2.2MeV 28.0 MeV 30.2 MeV

The half life of a radioactive nucleus is 50 days. The time interval (t2-t₁) between the time t2 when of it has decayed and the time ti when

A hydrogen atom in its ground state is excited by means of monochromatic radiation of wavelength 973Å. The number of different possible wavelengths emitted is N and longest wavelength among them is 144/kR. (Assume ionization energy for hydrogen as 13.6 eV, hC = 12406 eV-Å) (Ris Rydberg's constant)

A photon of energy 10.2 eV collides with a stationary hydrogen atom in ground state inelastically. After a time interval of the order of 10-³ sec another photon collides with same hydrogen atom inelastically with an energy of 15 eV. The observation by the detector will be 2 photons of energy 10.2 eV each 1 photons of energy 10.2 eV and another photon of 1.4 eV 1 photons of energy 10.2 eV and 1 electron of 1.4 eV 1 photons of energy 10.2 eV and another photon of 15 eV

In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated toward a gold nucleus, and its path was substantially deflected by the Coulomb interaction. If the energy of the doubly charged alpha nucleus was 8.43 Mev, how close (in m) to the gold nucleus (79 protons) could it come before being deflected?

In a radioactive decay of a nucleus, a ß* particle is emitted followed by a y photon of wavelength 8.30 × 10-13 m. (a) (i) State the rest mass, in kg, of the B+ particle. (ii) Calculate the energy of the y photon. (iii) Determine the energy of the y photon in MeV.

A certain radioactive material has a half-life of 1 day. If you start with 1024 g of the pure substance, how many grams would remain of the original isotope after 3 days? After 6 days? ] After 10 days?

How many molecules of dioxane are present in 2.00 x 10^-9 mol of dioxane? 8.02 x 10^32 molecules of dloxane 3.32 x 10^15 molecules of dioxane 1.20 x 10^15 molecules of dioxane 3.01 x 10^32 molecules of dioxane

Isotopes of hydrogen react, forming the element helium, as shown.This reaction is best classified as which? Select one: nuclear half-life nuclear fission nuclear fusion nuclear decay

15. The equation E = mc2 is one of the lasting symbols of science and nuclear chemistry in general. i. Explain what each term in this equation means and what energy is being calculated. What are the derived units for E? ii. Compare a nuclear reaction, such as uranium's alpha particle emission, with a nonnuclear reaction, such as the reaction of sodium with chlorine. What's the fundamental difference between these two types of reactions?

The Isotope chlorine-36 decays into argon-36, with a half-life of 3.01 x 105 years. Based on this information, fill in the blanks. A particular sample contains 3 x 10¹2 atoms of chlorine-36. After 9.03 x 105 years, there will