Answer: The equilibrium constant, 
, for the reaction is 0.061.
Explanation:
Initial concentration of 
= 
Equilibrium concentration of = 
The given balanced equilibrium reaction is,
Initial conc. 0.039 M 0 M 0 M
At eqm. conc. (0.039-x) M (x) M (x) M
Given : (0.039-x) = 0.012
x = 0.027
The expression for equilibrium constant for this reaction will be,
![K_c=\frac{[Cl_2]\times [PCl_3]}{[PCl_5]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BCl_2%5D%5Ctimes%20%5BPCl_3%5D%7D%7B%5BPCl_5%5D%7D)
Now put all the given values in this expression, we get :
The equilibrium constant, , for the reaction is 0.061.
Only two ATP molecules are produced during Glycolysis
Hope this helps!
Answer:
in the presence of a base
Explanation:
<em>Phenolphthalein will turn pink </em><em>in the presence of a base.</em>
<u>Phenolphthalein is an indicator that is used in acid/base titration to indicate end points. It responds to pH changes by changing its color. In basic solutions, the compound turns pink while it remains colorless in acidic medium. It has the chemical formula </u>
<u>.</u>
Phenolphthalein is considered a weak acid ordinarily and it ionizes incompletely in aqueous solution.
Addition of hydrogen ions shifts equilibrium to the left and the solution remains colorless while the addition of hydroxide ion removes the hydrogen ion and shifts the equilibrium to the right, giving pink coloration.
Answer:
The emission spectrum is formed when the electrons of a particular atom absorb energy and are excited (in this case by heating), reaching higher energy levels.
You can see it for example with an experiment where we light alcohol mixed with banana chips (it has potassium). The burning alcohol emits heat that makes potassium atoms excite and these in turn emit something red, orange light. If we add for example boric acid you see a green light.
Explanation:
MCu: 63,5 g/mol
4 × mCu = 63,5×4 = 254 g
254g ------ 0,39%
Xg ---------- 100%
X = (254×100)/0,39
X = 65128,2 g/ mol <<<< molar mass
