Answer:
decrease
Explanation
During the co ordinate bond between the Carbonyl and The metal ,
The Carbonyl donates the sigma electrons and through the process of back bonding , it accepts the electrons in its pi star orbitals i.e. , the antibonding orbitals , thereby reduces the bond order and which in turns reduces the bond strength and , there fore ,
The IR stretching frequency for CO reduces .
Answer:
69.152 % → 63Cu
30.848 % → 65Cu
Explanation:
As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.
Answer: vapor pressure of solution will be less than that of the pure solvent
Explanation:
Vapor pressure of a liquid is defined as the pressure exerted by the vapors in equilibrium with the liquid/solution at a particular temperature.
So, when a non-volatile solute is added to a solvent then its molecules align at the surface of liquid. As a result, less number of solvent molecules will escape from the solution. Thus, there will be decrease in vapors and thus the vapor pressure decrease.
As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.
The formula for relative lowering of vapor pressure will be,
where,
= vapor pressure of pure solvent
= vapor pressure of solution
= mass of solute
= mass of solvent
= molar mass of solvent
= molar mass of solute
Greater the pressure,greater the solubility of gas in a liquid.
Want an example?
Here it is, in the cold drinks we buy, CO2(carbon dioxide) is made soluble under high pressure in the liquid. As soon as we open these cans or bottles, the pressure releases.
Isn't it easy?
The sample of cobalt-60 (t₁/₂= 5.27 yr) must be replaced after 2.7 years which makes 2 years and 8.4 months. if the sample was purchased on march 2012 then it must be replaces on mid January 2015.
<h3>Briefly explained</h3>
To determine when the cobalt 60 needs to be replaced when it has achieved 70% of the activity. We simply need to use the first order integrated rate law which will allow us to calculate the time. However, when using this equation we need the Decay constant for Cobalt 60, which we can get from the half life of Cobalt 60.
We simply divide the half life of 5.27 years into the natural log of two and we get .13151 over years. If we have reached 70 Then 70% expressed as a decimal .7. So we have .7 of an original amount of one. So you can think of this as being divided by one. So the natural log of the amount at time T divided by the original amount is equal to negative K. Which we just calculated, multiplied by T.
With some algebraic rearrangement we get 2.7 years. So 2.7 years from the purchase of March one in 2012 is approximately early 2015.
Learn more about decay
brainly.com/question/1898040
#SPJ4
