Answer:
es she from 20.cto 75.c?es así es la
<span> a silvery white metal which maintains its luster for several months unless it </span>is<span> exposed to oxygen and then it eventually turns black. </span>
The kinetic energy of the products is equal to the energy liberated which is 92.2 keV. But let's convert the unit keV to Joules. keV is kiloelectro volt. The conversion that we need is: 1.602×10⁻¹⁹ <span>joule = 1 eV
Kinetic energy = 92.2 keV*(1,000 eV/1 keV)*(</span>1.602×10⁻¹⁹ joule/1 eV) = 5.76×10²³ Joules
From kinetic energy, we can calculate the velocity of each He atom:
KE = 1/2*mv²
5.76×10²³ Joules = 1/2*(4)(v²)
v = 5.367×10¹¹ m/s
Boiling I think! hope you get it right
The right answer is B. (B is ether)
The solubility in water of alcohols depends on the same two factors as previously, but which are here antagonistic:
* The carbon chain, hydrophobic, tends to make the molecule insoluble.
* The hydrophilic hydroxyl group (thanks to its hydrogen bonds) tends to render the molecule soluble.
Thus, the alcohols are all the more soluble in water that the number of alcohol functions is high. For example, butanediols are soluble in all proportions while butan-1-ol has a solubility of 77 g L-1.