Homework Answers
Ans. II and III
In a nuclear reaction there is breaking or deformation of nucleus occur which leads to formation of new element and most of time nuclear reactions have not any catalyst but some time we use neutrons for bombardment which rarely considered as a catalyst
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rrect Question 11 0/1 pts Which of the following is characteristic of a nuclear reaction? 1....
0/1 pts Incorrect Question 1 Which of the following is characteristic of a nuclear reaction? I. Electrons in atomic orb...
0/1 pts Incorrect Question 1 Which of the following is characteristic of a nuclear reaction? I. Electrons in atomic orbitals are involved in the breaking and forming of bonds II. Elements are converted from one to another III. Reaction rates are typically not affected by catalysts IV. Atoms are rearranged by the breaking and forming of chemical bonds I, II, and III II and III I and Il I, II, II, and IV lI and IV
I need helo witch part C!! please explain why you arrived at the answers. also, I...
I need helo witch part C!! please explain why you arrived at
the answers.
also, I need helo with part D numbers 2 and 4. I know one is
chemical and one is nuclear, but need help to know which is
which.
thanks!!
antimony-126 p decay electron capture positron emission a decay phologre hic plate C. Identify the three types of radioactive emissions depicted in the diagram to the right. 3= Lead block Radioactive material till Voltage source D. Identify...
0/1 pts Tect Question 9 Which of the following represents a rule for balancing a nuclear...
0/1 pts Tect Question 9 Which of the following represents a rule for balancing a nuclear equation? I. The total number of protons plus neutrons in the products and reactants must be the same II. The total number of each type of element in the products and reactants must be the same II. The total number of nuclear charges in the products and reactants must be the same IV.The total number of each type of elementary particle in the products...
Is sodium chloride (NaCl) dissolving in water an example of a chemical reaction? 1. Yes II....
Is sodium chloride (NaCl) dissolving in water an example of a chemical reaction? 1. Yes II. No because III. ion-ion interactions are overcome. IV. the resulting solution conducts electricity. V. valence electrons are not rearranged. VI. new chemical species are not produced. OI and III Oil and V OI and IV Oll and VI O I, III, and IV
Question 11 1 pts Which of the following experimental results suggested that the nuclear model on...
Question 11 1 pts Which of the following experimental results suggested that the nuclear model on the right is a better presentation of the atomic structure over the raisin-pudding model on the left? Thomson proposed that small, negative electrons are embedded in a sphere of positive charge. Alpha Sphere of positive charge Atoms of the same element can have different masses, due to the difference in the numbers of neutrons in the nudeus. Millikan's oil experiment determined that the fundamental...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward reaction stops only the reverse reaction stops both the forward and reverse reactions stop the rate constants for the forward and reverse reactions are equal the rates of the forward and reverse reactions are equal 2. A chemical equilibrium may be established by starting a reaction with reactants only. d. any quantities of reactants and products. products only. e. all the above equal quantities...
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv...
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv NBS Br Br IV Oa) I, II and III ob) I and II Oc) I, II, III and IV od) 1, III and IV Question 16 (2 points) Guess the structure of the compound using your understanding of chemical shifts. 2H PP انه IV oa) III ob) 1 oc) IV od) 11
1) The line spectrum of hydrogen includes lines at 447, 502, 587, and 668 nm. Which...
1) The line spectrum of hydrogen includes lines at 447, 502, 587, and 668 nm. Which of these wavelengths would be associated with the greatest amount of energy? A) 447 B) 502 C) 587 D) 668 E) cannot be determined 2) What is the total number of orbitals in the shell designated by n- 42 A) 7 B) 16 C) 4 D) 3 E) none of these 3) How many electrons are there in a 3p orbital? A) 2 B)...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction?...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction? ooooo III IV Il & IV O I&IV Only II Only IV Only! Only III II & III All the M.O.s of 1,3-butadiene are shown below. Which picture represents the Photochemically excited HOMO? 888 IV O IV O II
Question 9 7 pts Which of the following description is TRUE about electronegativity? 1. Electronegativity generally...
Question 9 7 pts Which of the following description is TRUE about electronegativity? 1. Electronegativity generally increases down a column in the periodic table. II. The trend of electronegativity is inversely related to the atom size. III. Electronegativity is the ability of an atom to attract electrons to itself in a chemical bond. I and II 1. II, and III oll only I and III II and III
0/1 pts Incorrect Question 1 Which of the following is characteristic of a nuclear reaction? I. Electrons in atomic orbitals are involved in the breaking and forming of bonds II. Elements are converted from one to another III. Reaction rates are typically not affected by catalysts IV. Atoms are rearranged by the breaking and forming of chemical bonds I, II, and III II and III I and Il I, II, II, and IV lI and IV
I need helo witch part C!! please explain why you arrived at
the answers.
also, I need helo with part D numbers 2 and 4. I know one is
chemical and one is nuclear, but need help to know which is
which.
thanks!!
antimony-126 p decay electron capture positron emission a decay phologre hic plate C. Identify the three types of radioactive emissions depicted in the diagram to the right. 3= Lead block Radioactive material till Voltage source D. Identify...
0/1 pts Tect Question 9 Which of the following represents a rule for balancing a nuclear equation? I. The total number of protons plus neutrons in the products and reactants must be the same II. The total number of each type of element in the products and reactants must be the same II. The total number of nuclear charges in the products and reactants must be the same IV.The total number of each type of elementary particle in the products...
Is sodium chloride (NaCl) dissolving in water an example of a chemical reaction? 1. Yes II. No because III. ion-ion interactions are overcome. IV. the resulting solution conducts electricity. V. valence electrons are not rearranged. VI. new chemical species are not produced. OI and III Oil and V OI and IV Oll and VI O I, III, and IV
Question 11 1 pts Which of the following experimental results suggested that the nuclear model on the right is a better presentation of the atomic structure over the raisin-pudding model on the left? Thomson proposed that small, negative electrons are embedded in a sphere of positive charge. Alpha Sphere of positive charge Atoms of the same element can have different masses, due to the difference in the numbers of neutrons in the nudeus. Millikan's oil experiment determined that the fundamental...
1. Which of the following is true for a chemical reaction at equilibrium? only the forward reaction stops only the reverse reaction stops both the forward and reverse reactions stop the rate constants for the forward and reverse reactions are equal the rates of the forward and reverse reactions are equal 2. A chemical equilibrium may be established by starting a reaction with reactants only. d. any quantities of reactants and products. products only. e. all the above equal quantities...
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv NBS Br Br IV Oa) I, II and III ob) I and II Oc) I, II, III and IV od) 1, III and IV Question 16 (2 points) Guess the structure of the compound using your understanding of chemical shifts. 2H PP انه IV oa) III ob) 1 oc) IV od) 11
1) The line spectrum of hydrogen includes lines at 447, 502, 587, and 668 nm. Which of these wavelengths would be associated with the greatest amount of energy? A) 447 B) 502 C) 587 D) 668 E) cannot be determined 2) What is the total number of orbitals in the shell designated by n- 42 A) 7 B) 16 C) 4 D) 3 E) none of these 3) How many electrons are there in a 3p orbital? A) 2 B)...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction? ooooo III IV Il & IV O I&IV Only II Only IV Only! Only III II & III All the M.O.s of 1,3-butadiene are shown below. Which picture represents the Photochemically excited HOMO? 888 IV O IV O II
Question 9 7 pts Which of the following description is TRUE about electronegativity? 1. Electronegativity generally increases down a column in the periodic table. II. The trend of electronegativity is inversely related to the atom size. III. Electronegativity is the ability of an atom to attract electrons to itself in a chemical bond. I and II 1. II, and III oll only I and III II and III
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