Answer:
Final volume = 0.103M x446ml/0.184m = 250ml
Explanation:
As time passes, the volume of solutions in the second beaker decreases and that in the first beaker increases. If we wait long enough, the final volumes and concentration in the beakers would be,
First beaker
Final concentration = 0.184M
Final volume = 0.296M x 284ml/0.184 = 457ml
Second beaker
Final concentration = 0.184M
Final volume = 0.103M x446ml/0.184m = 250ml
Explanation:
(a) Given that:
Half life = 14.2 days
Where, k is rate constant
So,
<u>The rate constant, k = 0.0488 days⁻¹
</u>
(b)Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
Where,
![[A_t]](https://tex.z-dn.net/?f=%5BA_t%5D)
is the concentration at time t
![[A_0]](https://tex.z-dn.net/?f=%5BA_0%5D)
is the initial concentration = 100 g
So,
![[A_t]=100\times e^{-0.0488\times t}\ g](https://tex.z-dn.net/?f=%5BA_t%5D%3D100%5Ctimes%20e%5E%7B-0.0488%5Ctimes%20t%7D%5C%20g)
(c) Given t = 6 days
So,
![[A_t]=100\times e^{-0.0488\times 6}\ g](https://tex.z-dn.net/?f=%5BA_t%5D%3D100%5Ctimes%20e%5E%7B-0.0488%5Ctimes%206%7D%5C%20g)
<u>Amount left = 74.6171 g</u>
Answer:
Helium (he) is the correct answer. But in answer choice there is not that.
Answer: 1.5 moles
Explanation: one mole Zn uses 2 moles HCl.
1.5 moles Zn uses 3.0 mol HCl. Then Zn is a limiting reactant
And produces equal amount of H2.
