Answer:
1. They will react.
2. 2HCI + Zn —> ZnCl2 + H2
Explanation:
1. From the question given above,
We can see that Zn is higher than H in the activity series.
NOTE: Elements higher (i.e at the top) in the activity series will displace those lower (i.e at the bottom) in the series. Thus, Zn is higher in the series than H. Therefore, Zn will displace H from solution. Hence, they will react.
2. The product obtained from the reaction can be seen as follow:
HCI + Zn —> ZnCl2 + H2
The above equation can be balance as follow:
There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HCl as shown below:
2HCI + Zn —> ZnCl2 + H2
One degree change of Kelvin and one degree change of Celsius is the same. To prove this, you can assume two values in Celsius then find the difference. Then convert the two values in Kelvin and find the difference, you will find they are equal.
One degree C is larger than one degree of F. Each deg. C is 1.8 more than each deg. F.
Answer: The first one
Air is a mixture and table salt is a compound
Explanation:
Sr(NO3)2 ---> Sr²⁺ + 2 NO3⁻
from the reaction 1 mol 1 mol 2 mol
from the problem 0.5 mol 0.5 mol 1 mol
