Hope this helps <span>A vector always consists of a direction and magnitude. F</span>
It is exothermic and will have a negative enthalpy.
Aluminium-27 is an isotope of aluminium characterized by the fact that is has a mass number equal to 27.
Now, an atom's mass number tells you the total number of protons and of neutrons that atom has in its nucleus. Since you're dealing with an isotope of aluminium, it follows that this atom must have the exact same number of protons in its nucleus.
The number of protons an atom has in its nucleus is given by the atomic number. A quick looks in the periodic table will show that aluminium has an atomic number equal to 13.
This means that any atom that is an isotope of aluminium will have 13 protons in its nucleus.
Since you're dealing with a neutral atom, the number of electrons that surround the nucleus must be equal to the number of protons found in the nucleus.
Therefore, the aluminium-27 isotope will have 13electrons surrounding its nucleus.
Finally, use the known mass number to determine how many neutrons you have
mass number=no. of protons+no. of neutrons
no. of neutrons=27−13=14
hope this helps.
Hopefully this helps, this is basically simplified but you could ask me for a more detailed explanation. But evaporation works by water on the ground(puddles, lakes, etc) turn into a vapor, which means the water tunrs into gas, which is invisible. Then that water goes up and is stored in the clouds which would then become water and fall into a puddle and the cycle repeats! Hope this Helped!
There is no answer choices i need answer choices you said which i cant say which one it is if i dont have answer choices
