Answer:
6.
Explanation:
G, H, O, N, Na, P
There are 6 different elements listed, with O (oxygen) showing up twice.
Answer: Zinc + Phosphoric Acid = Zinc Phosphate + Dihydrogen
Explanation:
<u>Answer:</u> The average rate of disappearance of A is ![8.9\times 10^{-3}M/min](https://tex.z-dn.net/?f=8.9%5Ctimes%2010%5E%7B-3%7DM%2Fmin)
<u>Explanation:</u>
The given chemical reaction follows:
![A\rightarrow B](https://tex.z-dn.net/?f=A%5Crightarrow%20B)
The average rate of the reaction for disappearance of A is given as:
![\text{Average rate of disappearance of A}=-\frac{\Delta [A]}{\Delta t}](https://tex.z-dn.net/?f=%5Ctext%7BAverage%20rate%20of%20disappearance%20of%20A%7D%3D-%5Cfrac%7B%5CDelta%20%5BA%5D%7D%7B%5CDelta%20t%7D)
Or,
![\text{Average rate of disappearance of A}=-\frac{C_2-C_1}{t_2-t_1}](https://tex.z-dn.net/?f=%5Ctext%7BAverage%20rate%20of%20disappearance%20of%20A%7D%3D-%5Cfrac%7BC_2-C_1%7D%7Bt_2-t_1%7D)
where,
= final concentration of A = 0.11 M
= initial concentration of A = 0.91 M
= final time = 90 minutes
= initial time = 0 minutes
Putting values in above equation, we get:
![\text{Average rate of disappearance of A}=-\frac{0.11-0.91}{90}\\\\\text{Average rate of disappearance of A}=8.9\times 10^{-3}M/min](https://tex.z-dn.net/?f=%5Ctext%7BAverage%20rate%20of%20disappearance%20of%20A%7D%3D-%5Cfrac%7B0.11-0.91%7D%7B90%7D%5C%5C%5C%5C%5Ctext%7BAverage%20rate%20of%20disappearance%20of%20A%7D%3D8.9%5Ctimes%2010%5E%7B-3%7DM%2Fmin)
Hence, the average rate of disappearance of A is ![8.9\times 10^{-3}M/min](https://tex.z-dn.net/?f=8.9%5Ctimes%2010%5E%7B-3%7DM%2Fmin)