1 day = 1, 440 minutes
16 days = (1, 440 × 16) days = 23, 040 minutes
Malleable, shiny and good conductors
A B E
Answer:
9
Explanation:
mass number = protons + neutrons
= 4 + 5 = 9
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 
I would say it would be a. It makes the most sense