Answer: The answer is blue, white, yellow-white, orange.
Explanation: These are the two basic reasons for different star colors:
Temperature – cooler stars are red, warmer ones are orange through yellow and white. The hottest stars shine with blue light
Age – As a star ages it produces different chemicals which burn at different temperatures. We can use a star’s color to show its relative age
Answer: The equilibrium constant for 
is 1.35
Explanation:
Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as 
For the given chemical reaction:
The expression for is written as:
![K_c=\frac{[PX_5]^1}{[PX_3]^1[X_2]^1}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BPX_5%5D%5E1%7D%7B%5BPX_3%5D%5E1%5BX_2%5D%5E1%7D)
![0.74=\frac{[PX_5]^1}{[PX_3]^1[X_2]^1}](https://tex.z-dn.net/?f=0.74%3D%5Cfrac%7B%5BPX_5%5D%5E1%7D%7B%5BPX_3%5D%5E1%5BX_2%5D%5E1%7D)
For the reverse chemical reaction:
The expression for 
is written as:
![K_c'=\frac{[PX_3]^1[X_2]^1}{[PX_5]^1}](https://tex.z-dn.net/?f=K_c%27%3D%5Cfrac%7B%5BPX_3%5D%5E1%5BX_2%5D%5E1%7D%7B%5BPX_5%5D%5E1%7D)
The equilibrium constant for is 1.35
Answer:
Final temperature = 28.0 degrees C.
Explanation:
heat absorbed = mass * specific heat * rise in temperature.
The specific heat of water is 4.186 J /g/C so we have the equation
209 = 10 * 4.186 * x where x is the temperature increase
41.86x = 209
= 5 degrees C.
Answer:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.
Explanation:
All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
….yes that’s correct it is a quark:)
