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
Answer:
c. electrons of the transition metal ion are excited to higher energies.
Explanation:
Answer:
B
Explanation:
First Law of thermodynamics says energy of the universe is constant and can only be changed in other forms of energy
The compound is CH₃CH₂CH₂NH₂
when naming the compound the C chain has 3 C atoms and they all are in a single chain therefore alkane chain is propane.
It has a -NH₂ group attached to the C therefore functional group is 'amine'
-NH₂ is attached to a terminal C atom therefore when numbering the C atoms the C attached to the substituent should have the lowest number therefore C atom with NH₂ is carbon atom 1
therefore name of the compound is 1-propanamine
Answer:
A
Explanation:
The pesticides and chemicals in are food could get us seriously sick and cause food poisoning. We are hurting our water by dumping sewage water into lakes and rivers did you ever think that someday a river or a lake will mix in with the ocean.
