17. The mass number for a particular atom with 45 neutrons is 80. How many proto
ID: 1398156 • Letter: 1
Question
17.
The mass number for a particular atom with 45 neutrons is 80. How many protons does the atom have?
40
80
35
45
18.
A nuclear bomb explosion results in a mass decrease of about between the initial and the final components. How much energy is released? Let the speed of light c = 3.00 × 108 m/s.
6.30 × 105 J
1.89 × 1017 J
2.25 × 1012 J
1.89 × 1014 J
19.
A radioactive nuclide of atomic number Z emits an alpha particle, and then the daughter nucleus emits a beta particle. What is the atomic number of the resulting nuclide after both processes?
Z-2
Z+1
Z-3
Z-1
20.
In a nuclear reaction, the total rest mass of the products is 0.003892 u greater than the total rest mass of the reactants. Is the reaction exoergic or endoergic, and what is the reaction energy Q? Let 931.5 MeV = 1 u.
endoergic; Q = -3.625 MeV
endoergic; Q = -7.823 MeV
exoergic; Q = 3.625 MeV
exoergic; Q = 7.823 MeV
17.
The mass number for a particular atom with 45 neutrons is 80. How many protons does the atom have?
40
80
35
45
18.
A nuclear bomb explosion results in a mass decrease of about between the initial and the final components. How much energy is released? Let the speed of light c = 3.00 × 108 m/s.
6.30 × 105 J
1.89 × 1017 J
2.25 × 1012 J
1.89 × 1014 J
Explanation / Answer
17 .
mass number is the sum of no. of proton and no. of neutrons
mass number = proton + neutron
80 = 45 + p
p = 35
so the no. of protons is 35
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.