Answer:
1. 67.2 kJ/mol
Explanation:
Using the derived expression from Arrhenius Equation

Given that:
time
= 8.3 days = (8.3 × 24 ) hours = 199.2 hours
time
= 10.6 hours
Temperature
= 0° C = (0+273 )K = 273 K
Temperature
= 30° C = (30+ 273) = 303 K
Rate = 8.314 J / mol
Since 
Then we can rewrite the above expression as:








Answer:
A solution, in science, refers to a type of mixture involving two or more substances. Specifically, the solution definition refers to a type of homogeneous mixture - i.e., a mixture that has a uniform composition and its individual components cannot be distinguished
Answer: precipitate
Explanation: Chemical change is a change in which the chemical composition of the atoms changes. The following changes are seen when chemical reaction takes place:
1) Release or absorption of heat
2) Formation of solid or a precipitate

3) Change in color
4) Production of gas
It’s definitely persuade!