The reaction that exemplifies a double replacement reaction is as follows: K2S + CoCI2 -> 2KCI + CoS, which is option 1.
<h3>What is a double replacement reaction?</h3>
A double replacement reaction is a type of reaction in which two elements are substituted in the reacting compounds.
In the reaction given as follows:
K2S + CoCI2 -> 2KCI + CoS
- Pottasium replaces cobalt in Cobalt chloride
- Sulfur replaces chlorine in Cobalt chloride
Therefore, the reaction is a type of double replacement reaction.
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It is softer than topaz and and it is softer than diamond (diamond has a Mohs hardness of 10, which is the highest value of the scale)
The answer is inductive reasoning.
Using specific observations to make generalizations means inductive reasoning.
Inductive reasoning is opposite to deductive reasoning, it makes generalization from specific observations. Generalization is done from specific set of observations. After generalization, conclusions are drawn from the data. Inductive reasoning has its place in scientific method.
Hey there!
The atomic mass is the sum of the protons and electrons.
The charge of an atom is the difference between protons and electrons.
So, the number of protons is p, and p - 11 = -1.
Add 11 to each side and get p = 10. The atom has 10 protons.
The atom has 10 protons and 8 neutrons, the sum of the two is the atomic mass.
10 + 8 = 18
The atom has an atomic mass of 18.
Hope this helps!