What is the mass defect of oxygen-16? Assume the following: The atomic number of oxygen-16 is 8. The atomic mass of oxygen-16 is 15.9994 atomic mass units. The mass of one proton is 1.0073 atomic mass units. The mass of one neutron is 1.0087 atomic mass units.
Answers
The mass defect of oxygen-16 is 0.1286 amu.
What is mass defect?
The difference between the mass of the atom and the sum of the masses of its parts is called the mass defect (Δm).
To find the mass defect, we have to add nucleas, protons and electron masses.
Since, atomics mass= 15.9994 amu
Total mass of nucleons
= 8(mass of proton + mass of neutron)
=8(1.0073+1.0087)
= 16.128
So, the mass defect
=16.128-15.994
= 0.1286
Hence, the mass defect is 0.1286 amu.
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The Jurassic zoo charges $12 for each adult admission and $7 for each child. The total bill for 129 people was $1088. How many adults and how many children?
b) 1/7
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d) 3/4
Answers
[ 6 0 2 -8
[7 -1 -11 4
[-9 -5 5 -10
Answers
b24 means the element of set B in the second row and 4th column.
(-8) is at that position.
What is set theory?
The mathematical concept of well-defined groupings of objects, or sets, that are referred to as members or elements of the set. The only sets that are taken into consideration are those whose members are also sets because pure set theory only deals with sets.
Given that the set is,
B=[-4 10 -3 9
[ 6 0 2 -8
[7 -1 -11 4
[-9 -5 5 -10
B24 stands for the B element in the second row and fourth column.
There is a (-8) there.
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(-8) is at that position.
B) 4π cm2; 16π cm2; NO
C) 4π cm2; 16π cm2; YES
D) 4π cm2; 8π cm2; YES
Answers
from pir^2 ro pi(2r)^2
pi(2r)^2=pi4r^2=4pir^2
basicaly we look for any no options and ones where second is 4 times first
B
pi2^2, if it is double, pi4^2
B
B. 3 : 5 = 12 : 20
C. 14 : 6 = 28 : 18
D. 42 : 7 = 6 : 2
Answers
2/3=3/2? No
3/5=12/20? Lets try and see
If we simplify 12/20 what do we do? Well we take 4*3=12 and 4*5=20
Now that we simply the 4 from both the numerator and denominator we get our answer 3/5
Your answer will be B.
Answers
Well the first has the angles being 3x+12,x,and 90 so they have to add up to 180 degrees because it is a triangle.
3x+12+x+90 = 4x+102 = 180 solve
4x+102=180
4x=78
x=19.5
L. A. =
Answers
we have a formula to find the lateral surface area of regular pyramid.
is the perimeter of the base of regular pyramid
is the slant height .