There are 3 significant figures in the number 0.00666. They are each of the non-zero number 6's. The zero's before a number are not significant. The zeroes AFTER a number ARE significant.
For example:
0.006660 has four significant figures because there is a zero after nonzeroes.
0.00666 only has three significant figures because the zeros before a significant figure are not significant.
Any Questions?
Plate Tectonics is the theory that earths outer shell is divided into several plates that glide over the mantle.
Since most acetic acid molecules do not dissociate when a sample is dissolved in water, acetic acid and water molecule interactions are what determine how soluble a substance is. In its liquid state, water forms a network of hydrogen bonds among its molecules; when a material dissolves in water, this network of hydrogen bonds is broken.
<h3>What is acetic acid such a poor electrolyte?</h3>
Since acetic acid is a weak acid, only a small portion of the acetic acid molecules react to produce ethanoate and hydronium ions, shifting the equilibrium position substantially to the left. Aqueous acetic acid is a weak electrolyte as a result of the existence of these few ions.
<h3>Why does acetic acid have a low conductivity?</h3>
The majority ($> 99%) of the acetic acid molecules remain after dissolution, with only a very tiny portion deprotonating to form acetate anions. Only the latter are charged compounds, and as a result, only these increase the conductivity of the solution. They are few, and conductivity is low.
<h3>What makes acetic acid more potent than water?</h3>
The equilibrium shifts to the left and the concentration of hydrogen ions decreases when a strong acid is added to the buffer solution. A strong base is also added, which causes the equilibrium to move to the left and results in a smaller pH increase. Because of this, acetic acid is a better buffer than water.
Learn more about Acetic acid
brainly.com/question/17081077
#SPJ4
<span>Dichotomous </span><span>Key Is One Approach To Identify Something Unknown?
</span>
Answer:
Explanation:
Two important formulas in radioactive decay are
1. Calculate the decay constant k
2. Calculate the time
