Answer: It will take 8.2 minutes until the concentration decreases to 0.055 M
Explanation:
The time after which 99.9% reactions gets completed is 40 minutes
Explanation:
Expression for rate law for first order kinetics is given by:

where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.


b) Time taken for 0.085 M to decrease to 0.055 M


Thus it will take 8.2 minutes until the concentration decreases to 0.055 M
It turns liquid to gas. Hoped this helped!!

explain how static energy is generated?
Answer:
Hi, there! ♚♛♕♔ッ✨♚
Static electricity is the result of an imbalance between negative and positive charges in an object.
These charges can build up on the surface of an object until they find a way to be released or discharged
Hope this helps!!
♚♛♕♔ッ✨♚
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2Na + 2H2O ——> 2 NaOH + H2