Answer: all atoms of the same element have the same atomic number.
Explanation:
atomic mass differentiates them, which is the same as the mass number.
he mass defect of the helium nucleus ⁴He₂ is 0.030377 u
Further explanation
Mass defect means the difference between the mass of particles forming an atom with an atomic mass.
Δm = mass defect ( u )
mp = mass of proton ( u )
me = mass of electron ( u )
mn = mass of neutron ( u )
M = atomic mass ( u )
A = mass number
Z = atomic number
Let us now tackle the problem !
Given :
Unknown :
Δm = ?
Solution :
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Answer details
Grade: College
Subject: Physics
Chapter: Nuclear Physics
Keywords: Mass , Defect , Nucleon , Number , Atomic , Proton , Electron , Neutron
"Hydrochloric acid (HCl) is an example of an acid. When it dissolves in water, it produces positive hydrogen ions and negative chloride ions (Cl-). This can be represented by the chemical equation: HCl H2O→ H+ + Cl."
Hope this helps! Sorry if it doesn't.
Answer:
Mass of Cl₂ = 17.25 g
Explanation:
Given data:
Moles of hydrochloric acid = 0.485 mol
Mass of chlorine gas = ?
Chemical equation:
4HCl + O₂ → 2Cl₂ + 2H₂O
Now we will compare the moles of Cl₂ with HCl .
HCl : Cl₂
4 : 2
0.485 : 2/4× 0.485 = 0.243 mol
Oxygen is present in excess that's why mass of chlorine produce depend upon the available amount of HCl.
Mass of Cl₂
:
Mass of Cl₂ = moles × molar mass
Mass of Cl₂ =0.243 mol × 71 g/mol
Mass of Cl₂ = 17.25 g
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