Como Así de ANPChT estás seguro que está correcta
1. cut the bread
2.serve the dinner
3.add carrots
4.mix the salad
5.put the dishes
6.make the lunch
Should be correct
42. A
43. C
44. B
45. D
46. B
47. B
48. A
49. B
50. D
Answer:
The half life of an isotope is the time that an element take to reduce the half of the mass.
Explanation:
So for example,in the case of carbon 14, one gram takes 5730 years to reduce to 0.5 g, and then, it takes another 5730 years to be reduced to 0.250 g and so and so.
So depending the mass of the sample that you have, for example, a bone that weights 15 g, it will take 5730 years to have a mass of 7.5 g, and then 11, 460 years to have a mass of 3.75 g, and then 17,190 years to have a mass of 1.875 g, and so, and so.
Hope this info is useful.
