The correct answer among the choices given is the last option. Galaxies are classified according to their shapes or visual morphology. There three main types of galaxies currently. They are the elliptical, spiral and irregular. Elliptical galaxies are like a spheriod or an elongated sphere. Spiral galaxies are characterized and distinguished by having a bulge, a disk and a halo. Lastly, irregular galaxies do not have regular or symmetrical shape.
B. 8
Although it may seem that transition metals would have more than 8 valence electrons, they in fact do not.
Answer:
pH ( potential Hydrogen ) is a negative logarithm of molar concentration of hydrogen ions.
![pH = - log[H {}^{ + } ]](https://tex.z-dn.net/?f=pH%20%3D%20%20-%20%20log%5BH%20%7B%7D%5E%7B%20%2B%20%7D%20%5D)
therefore:
Answer:
Explanation:
Hello,
Based on the given reaction, since magnesium and water are in a 1:2 molar ratio at the reactants, we must apply the following stoichiometric factors to compute the complete reaction of the 6.0 g of magnesium:
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The result which occurs during an exothermic reaction is: C. Light and heat are released into the environment.
A chemical reaction is defined as a chemical process involving the continuous transformation and rearrangement of either the ionic, atomic or molecular structure of chemical elements, especially through the breakdown and formation of chemical bonds, so as to produce a new chemical compound.
Basically, the two (2) main types of chemical reaction are;
- <u>Endothermic reaction:</u> this is a chemical reaction in which heat is absorbed
.
<u>Exothermic reaction:</u> this is a chemical reaction in which light and heat is liberated (released) into the environment.
In an exothermic chemical reaction, light and heat energy is liberated (released) when the energy of the products is lesser than the energy of the reactants.
In conclusion, light and heat is liberated (released) into the environment during an exothermic reaction.
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