Hello!
To answer your question lets go over what Chemical Sedimentary Rock is.
Chemical Sedimentary Rocks are formed by the cementation, saturation and deposition of minerals in the solution causing them to be inorganic and preciptate.
The most known example of this is rock salt.
Of the list you have provided of possible examples the following are defined as chemical sedimentary rock:
- Rock Salt
- Iron Ore
- SOME limestones
I hope this helps in answering your question.
Answer:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Explanation:
The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time (
), in grams, is described below:
(1)
Where:
- Initial mass, in grams.
- Time, in years.
- Time constant, in years.
The time constant can be found from half life (
), in years, described in statement:
(2)
If we know that 
, 
and 
, then the current amount of the sample is:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Answer:
the parts of canada that appear to have relatively few resources are northern canada ( yukon territory, northwest territories, and nunavut ) because they're cold year-round and close to the north pole, therefore the resources that <em>do </em>exist in northern canada are covered in permafrost and unable to access.
hope this helps! <3
Japan because the names are Japanese and there is a lot of small islands around japan
It would drasticaly change the inviroment, and would cause most producers to become extinct which would cause the rest of the animals to become extinct too. adventualy every living thing would die out....
(i believe that would happen, so lets hope it never does!)
