Answer:
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Explanation:
Symbiology of nuclear isotopes can be written in one of two ways. That is, for the symbiology Ni-63, the '63' represents the nuclear isotopic mass and represents the sum of the number of neutrons and protons. When expressed in subscript and superscript notation Ni-63 becomes ₂₈Ni⁶³ where '28' is the atomic number and represents the number of protons (p⁺) in the nucleus and the number '63', as mentioned above, represents the number of neutrons and protons. Thus, for any isotope the number of protons can NOT change or the element changes but the number of neutrons can change giving the various isotopes of a given element. Example: Oxygen exists in 3 primary isotopes, O-16, O-17 & O-18. Since the atomic number of oxygen is always 8 (i.e., 8 protons), writing it into the symbiology is optional => ₈O¹⁶, ₈O¹⁷ & ₈O¹⁸. However, the number of neutrons can change and is always listed in the symbiology by X-(mass no.) or ₐXᵇ, where a = # of protons (atomic no.) and b = #protons + #neutrons.
For determining the numbers of protons and neutrons, remember the large number is always a superscript (p⁺ + n°) and the smaller number always the subscript (p⁺). So, number of neutrons, therefore, can be easily be determined by 'superscript - subscript' = (p⁺ + n°) - (p⁺) = number of n°.
For nuclear equations, the mass and charge must balance for reactants and products. That is, ∑reactant superscripts = ∑product superscripts and ∑reactant subscripts = ∑product subscripts.
Given Ni-63 as decaying by β⁻ emissions (high energy electrons => ₋₁e°), one writes ...
₂₈Ni⁶³ => ₐXᵇ + ₋₁e° => ₂₈Ni⁶³ => ₂₉Cu⁶³ + ₋₁e°
Note: ∑reactant superscripts (63) = ∑product superscripts (63 + 0) and ∑reactant subscripts (28) = ∑product subscripts [(29 + (-1)].
Hope this helps. Doc :-)
Metal is 1 of the best electrical conductors and this because , heat travels fast and locks heat inside of it . It will not transfer heat to anything other than the metal itself
Answer:
it would do wonders for the health of those using them and, by extracting energy from the fuel more efficiently, would be more environmentally sustainable too.
Kinetic Energy= 0.5 times velocity squared times mass
So KE= 0.5times 150 times 40 squared
(Use a calculator)
And don't forget units
CH₄ + 2 O₂ → CO₂ + 2 H₂O
Explanation:
In the combustion reaction methane (CH₄) will react with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O).
CH₄ + O₂ → CO₂ + H₂O
To balance the chemical equation the number of atoms of each element entering the reaction have to be equal to the number of atoms of each element leaving the reaction, in order to conserve the mass.
So the balanced chemical reaction will be:
CH₄ + 2 O₂ → CO₂ + 2 H₂O
Learn more about:
balancing chemical equations
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