Answer: 12.0 milliliters of 6.50 M HCl ( aq ) are required to react with 2.55 g Zn.
Explanation:
moles =![\frac{\text {given mass}}{\text {Molar mass}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%20%7Bgiven%20mass%7D%7D%7B%5Ctext%20%7BMolar%20mass%7D%7D)
moles of zinc =![\frac{2.55g}{65.38g/mol}=0.0390moles](https://tex.z-dn.net/?f=%5Cfrac%7B2.55g%7D%7B65.38g%2Fmol%7D%3D0.0390moles)
The balanced chemical equation is :
![Zn(s)+2HCl(aq)\rightarrow ZnCl_2(aq)+H_2(g)](https://tex.z-dn.net/?f=Zn%28s%29%2B2HCl%28aq%29%5Crightarrow%20ZnCl_2%28aq%29%2BH_2%28g%29)
According to stoichiometry:
1 mole of zinc reacts with = 2 moles of HCl
Thus 0.0390 moles of zinc reacts with =
moles of HCl
To calculate the volume for given molarity, we use the equation:
.....(1)
Molarity of
solution = 6.50 M
Volume of solution = ?
Putting values in equation 1, we get:
![6.50M=\frac{0.0780\times 1000}{\text{Volume of solution in ml}}](https://tex.z-dn.net/?f=6.50M%3D%5Cfrac%7B0.0780%5Ctimes%201000%7D%7B%5Ctext%7BVolume%20of%20solution%20in%20ml%7D%7D)
![{\text{Volume of solution in ml}}=12.0ml](https://tex.z-dn.net/?f=%7B%5Ctext%7BVolume%20of%20solution%20in%20ml%7D%7D%3D12.0ml)
Thus 12.0 ml of 6.50 M HCl ( aq ) are required to react with 2.55 g Zn
D. a change in color of a substance
Answer: In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
Explanation:
ANSWER:A.blood
WHY: because it make the most sense and it seem right
Can I get brainly
Gas to liquid solids are going to break the liquid