After two half-lives or 60 years, 7.5 g of the element will be left.
<u>Explanation:</u>
<u>Half-life:</u>
- In simple words, Half-life can be defined as the amount of time needed for a quantity to fall to half its value as contained at the beginning of the time period.
- In this problem the half-life of the element is thirty years, then after thirty years half of the sample would have decayed and half would be left as it is.
- After thirty years (The first half-life ) 30 /2 = 15 g declines and 15 g remains disappeared.
- And after another sixty years (The two half-lives) 15 /2 = 7.5 g declines and 7.5 g remains disappeared.
- After two half-lives or 60 years, 7.5 g of the element will be left.
Answer:
Answer: 2
Explanation:
I do not not know a VOC resource is, but it is not the answer. The answer is B, a rapidly renewable resource.
Somethings are by products. Silver and Gold can be byproducts of copper, but Bamboo is a primary resource. You use it as soon as you grow it.
Answer 2
Answer:
Girl bye
Explanation:do your work
Oh gagahahs and the hormymoneya re better because I am wasting your trip ma
Thyriod gland is the right answer