Answer:
yes. I think
Explanation:
im not really sure though
a chemical property of iron is the ability to change it, hammer it, roll it, shape it etc
The correct answer is the one in the middle. Mixing food coloring and water
Answer: The rate constant for the reaction is 
Explanation:
Expression for rate law for first order kinetics is given by:

where,
k = rate constant
t = age of sample = 559 min
a = let initial amount of the reactant = 
a - x = amount left after decay process = 



The rate constant for the reaction is 