Answer:
One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it.
Explanation:
A Fuse wire has low melting point
Answer:
Explanation:
From the given information:
The energy of photons can be determined by using the formula:
where;
planck's constant (h) =
speed oflight (c) =
wavelength λ = 58.4 nm
To convert the energy of photon to (eV), we have:
Hence
E = 21.2 eV
b)
The equation that illustrates the process relating to the first ionization is:
c)
The 1st ionization energy (I.E) of Hg can be calculated as follows:
Recall that:
I.E = Initial energy - Kinetic Energy
I₁ (eV) = 21.2 eV - 10.75 eV
I₁ (eV) = 10.45 eV
Since ;
∴
Hence; the 1st ionization energy of Hg atom =
Finally;
To find joules (heat) we use the following formula
heat= mass x specific heat x ΔT
mass= 72.5 grams
specific heat (Water)= 4.184 j/g·C
ΔT= 95 - 28= 67 °C
heat= (72.5 grams) (4.18 j/g·C) (67°C)= 20300 joules or 20.3 Kilojoules
In chemical reactions, elements or compounds called reactants, are changed into other substances or compounds and elements called products. You cannot change one element into another in a chemical reaction. They are both important in order to classify the reaction.