<u>Answer:</u> The nuclear binding energy of the given element is 
<u>Explanation:</u>
For the given element 
Number of protons = 3
Number of neutrons = (6 - 3) = 3
We are given:
M = mass of nucleus = 
![M=[(3\times 1.00728)+(3\times 1.00866)]=6.04782amu](https://tex.z-dn.net/?f=M%3D%5B%283%5Ctimes%201.00728%29%2B%283%5Ctimes%201.00866%29%5D%3D6.04782amu)
Calculating mass defect of the nucleus:
![\Delta m=M-A\\\Delta m=[6.04782-6.015126)]=0.032694amu=0.032694g/mol](https://tex.z-dn.net/?f=%5CDelta%20m%3DM-A%5C%5C%5CDelta%20m%3D%5B6.04782-6.015126%29%5D%3D0.032694amu%3D0.032694g%2Fmol)
Converting this quantity into kg/mol, we use the conversion factor:
1 kg = 1000 g
So, 
To calculate the nuclear binding energy, we use Einstein equation, which is:
where,
E = Nuclear binding energy = ? J/mol
= Mass defect = 
c = Speed of light = 
Putting values in above equation, we get:
Hence, the nuclear binding energy of the given element is
Lead-
<span>Atomic number: </span>82<span>Symbol: </span><span>Pb
Silver-
</span><span>Atomic number: </span>47<span>Symbol: </span><span>Ag
Gold-
</span><span>Atomic number: </span>79<span>Symbol: </span><span>Au</span>
Answer: 57 neutrons
Explanation: Ruthenium has an atomic number of 44, meaning it has 44 electrons, 44 protons, and 57 neutrons.
Alkalines form this. (If that is what your ? is asking )
This question calls for Charles' Law (one of the gas laws) because it deals with volume and temperature of a gas. Charles' Law is as follows:
V₁/T₁ = V₂/T₂
Just plug in what you know! The initial volume and temperature (V₁ and T₁) are 2.3L and 24⁰C. The final volume (V₂) is 3.0L. Solve for T₂ algebraically:
2.3/24 = 3.0/T₂ *cross multiply here
2.3T₂ = 72
T₂ = 31.3⁰C
Now, convert to Kelvin by adding 273 to the temperature.
31.3 + 273 = 304.3K
The answer must be D because that is the only option where the balloon would reach at least 3.0L.
