Answer:
4.8 g/mL is the density of chloroform vapor at 1.00 atm and 298 K.
Science is constantly changing as new things are always being discovered, therefore "it is consistent and does not need to change with new discoveries" is false.
Answer:
1. This reaction is <u>(A) Exothermic .</u>
2. When the temperature is decreased the equilibrium constant, K: <u>(A) Increases</u>
3.When the temperature is decreased the equilibrium concentration of Co2:<u> (A) Increases</u>
Explanation:
1. The pink color predominates at low temperatures, indicating that the commodity is preferred.
This is a reaction that is <u>exothermic.</u>
2. As the decrease in the temperature , the equilibrium constant , K ;
equilibrium constant = 
=![\frac{[CO^2^+][Cl^-^4]}{CoCl^2^-_4}](https://tex.z-dn.net/?f=%5Cfrac%7B%5BCO%5E2%5E%2B%5D%5BCl%5E-%5E4%5D%7D%7BCoCl%5E2%5E-_4%7D)
As the temperature drops, the concentration of
and 
rises, and K rises as well , thus it <u>increases </u>.
3. The equilibrium concentration of decreases as the temperature decreases:
When the temperature is lowered, the equilibrium shifts to the right , that is it <u>increases.</u>
Actual yield and theoretical yield are usually different.
the percentage yield of product = actual yield / theoretical yield x 100%
the theoretical yield is 53.8 g
and percentage yield - 73.6 %
from the theoretical yield only 73.6 % of that amount is in the actual yield
therefore actual yield is 73.6 % of 53.8 g
actual yield - 53.8 x 73.6% = 39.6 g
actual yield is 39.6 g
A platinum wire is dipped into a strontium nitrate solution. Then inserted into a burner flame, then the strontium atoms emit a characteristic red color. this is an example of how an element can be identified by its unique atomic emission spectrum.
<h3>What is atomic emission spectrum?</h3>
The goal of an atom's electron arrangement is to keep the energy of the atom as low as feasible. An atom's ground state has the lowest energy level of all the atoms. When the energy is applied to those atoms, the electrons take it in and go to a higher energy level. The electrons in atoms have quantized energy levels, which again means that they must transition from one level to another in discrete increments rather than constantly. An atom is said to be in an excited state when its potential energy exceeds that of the ground state. An excited atom is not a stable atom.
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