Answer:
Sultan Hasanudi's efforts against the Dutch were when the Aru Palaka rebellion occurred, which received assistance from the Dutch, Sultan Hasanudin deployed 7,000 troops to quell the rebellion and expel the Dutch. The battle lasted for almost a year. Because of his persistence against the Dutch, Sultan Hasanuddin was given the nickname Rooster of the East.
Explanation:
What is there any options ? <span>
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Answer:
B and C
Explanation:
B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.
This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.
From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.
C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.
The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.
From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.
