The answer is false
(Apex)
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.
Answer:
Saint-Domingue (Haiti) was prosperous because of revenue earned from sugar.
Explanation:
When the Europeans came to Haiti, the native people lived in a simple way and were relatively isolated from their surroundings, let alone the world. The Europeans though thought that this place has big potential, especially in farming. What the Europeans had on mind was to create large plantations with sugar cane, thus produce sugar and make a profit out of it.
While the Europeans were not many in number, and the native population was decimated, a lot of African slaves were brought as a labor force for the plantations. The wet tropical climate enabled high-scale production of sugar cane, and with sugar becoming increasingly popular and being paid well for, the Europeans earned a lot from the trade. Haiti actually became a very prosperous island, and that was strictly down to the production of sugar cane and sugar from it.
Answer:you will have more space
Explanation:
