There is only one element with atomic mass 3 and it’s lithium and it only has 3 protons and 4 neutrons
The jet stream is a band of reliably strong wind that plays a key role in keeping colder air north and warmer air south. But when the vortex weakens, part of the weakened low-pressure system can break off. This breaking-off process is what causes a polar vortex.
Without that strong low-pressure system, the jet stream does not have enough force to maintain its usual path. It becomes wavy and rambling. When high-pressure systems get in its way, a collection of cold air pushes south, along with the rest of the polar vortex system
Answer:

Explanation:
From the question we are told that:
Mass of zinc 
Initial conc of HCl 
Initial volume of HCl
Molar mass of zinc
Generally the equation for reaction is mathematically given by

Generally the equation for moles of zinc
is mathematically given by



Generally the equation for moles of
is mathematically given by
Generally the reacted moles of HCl
is mathematically given by
Since
Zn:HCl =1:2
Therefore
![HCl_[reacted]=0.038*\frac{2}{1}](https://tex.z-dn.net/?f=HCl_%5Breacted%5D%3D0.038%2A%5Cfrac%7B2%7D%7B1%7D)
![HCl_[reacted]=0.076mol \ HCl](https://tex.z-dn.net/?f=HCl_%5Breacted%5D%3D0.076mol%20%5C%20HCl)
Generally the moles of HCl after Zn oxidization X is mathematically given by


Generally the conc of hydrochloride acid X is mathematically given by


Therefore Conc of HCl

Put a thermometer in the water and wait until it boils. When it boils record the temperature and compare it to the normal water boiling point.