isotopes are the same element, but have different numbers of neutrons (but still have the same number of electrons and protons), hence have a different mass number.
Answer and Explanation:
Polar molecules are formed as a result of unequal sharing of electrons by the atoms in the molecule which creates polarization like that in water molecule.
If the electrons are shared equally by the atoms in the molecule then there won't be any polarization of the molecule and the molecule is non polar.
Electro-negativity is that property of an atom which lets it attract negative charges, i.e., electrons. The more the electro-negativity of an atom in the molecule the more are the chances of its polarization.
the brain's ability to change throughout the lifespan as a result of experience
We have that The Density and Volume is given as
![\rho=0.67\\\\\V=30cm^3](https://tex.z-dn.net/?f=%5Crho%3D0.67%5C%5C%5C%5C%5CV%3D30cm%5E3)
The factors that affect Density are Mass and Volume
From the question we are told that
The piece of wood shown above has a mass of 20 grams.
Wood parameters
2cm
5cm
3cm
Generally the equation for the Volume is mathematically given as
![V=L*B*H\\\\\V=2*5*3\\\\V=30cm^3](https://tex.z-dn.net/?f=V%3DL%2AB%2AH%5C%5C%5C%5C%5CV%3D2%2A5%2A3%5C%5C%5C%5CV%3D30cm%5E3)
Generally the equation for the Density is mathematically given as
![\rho=\frac{m}{v}\\\\\\rho=\frac{20}{30}\\\\\rho=0.67](https://tex.z-dn.net/?f=%5Crho%3D%5Cfrac%7Bm%7D%7Bv%7D%5C%5C%5C%5C%5C%5Crho%3D%5Cfrac%7B20%7D%7B30%7D%5C%5C%5C%5C%5Crho%3D0.67)
Therefore the factors that affect Density are Mass and Volume
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Answer:
I think it is false. Johann balmer analyzed the spectral lines of hydrogen