Answer:
they need to do their research
Answer: 8.1 days
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 = x
a - x = amount left after decay process=
a) to find rate constant
Half life is the amount of time taken by a radioactive material to decay to half of its original value.


b) for completion of one fourth of reaction



Thus after 8.1 days , one fourth of original amount will remain.
Answer:
True
Explanation:
The majority of the reactions happened with a flow of heat. When there's no heat, the reaction is adiabatic.
For no adiabatic reactions, the heat can be released (evolution) by the system, so the reaction will be exothermic, or absorbed by the system (absorption), then the reaction is called endothermic.
P S
4 10
you just use the roots given in the molecular formula
<span>Arrhenius
base, such as NaOH(aq), produce hydroxide ions when dissolved in water.
According to Arrhenius, base are compounds or ions that releases hydroxide (OH-)
ions in its aqueous form which is true for NaOH.</span>