Examine the graph showing the half life of the radioactive isotope substance x. Based on this graph, what might be the best use of thos radioactive isotop?
Determining the age of the objects less than 50000 years old.
Long term radioactive dating such as in dating rocks
Short term radioactive imaging such as nuclear medicine.
Determining the age of objects over 1000000 years old
Answers: 2
Chemistry, 22.06.2019 18:00
Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 3
Chemistry, 22.06.2019 22:30
Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.
Answers: 1
Chemistry, 23.06.2019 06:00
Each step in the following process has a yield of 70% ch4 + 4cl2 yield ccl4 +4hcl ccl4 + 2hf yield ccl2f2 + 2hcl of 4.50 mole ch4 reacts what is the total amount of hcl produced
Answers: 3
Examine the graph showing the half life of the radioactive isotope substance x. Based on this graph,...
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