Hello, this is what u can write.
“An object moving with constant velocity must have a constant speed in a constant direction”
Hope this helps u :)
The radioactive isotope used in the calvin experiments was Carbon 14. It was used as a tracer. <span>The </span>experiments<span> performed by Melvin </span>Calvin<span> explained the process that plants use to make food. Hope this answers the question. Have a nice day.</span>
Answer : The value of for the reaction is +571.6 kJ/mole.
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The given chemical reaction is,
Now we have to determine the value of for the following reaction i.e,
According to the Hess’s law, if we reverse the reaction then the sign of change.
So, the value for the reaction will be:
Hence, the value of for the reaction is +571.6 kJ/mole.
Fluorine, chlorine, iodine (the halogens), oxygen, sulphur, hydrogen
It may seem remarkable that we can learn about the composition of distant stars by studying the light they emit. In fact, we can learn a great deal, not only about the chemical elements present, but also about physical conditions. The key is to spread the light out by color, producing a spectrum like the one shown in Fig. 1. This lab explores some of the basic ideas used to analyze spectra.