The half-life of carbon-14 is 5,730 years. How many grams of parent material will remain from a 100-gram sample of carbon-14 after 2 half-lives? (2 points)

75

25

12.5

6.25

Is it C?

Question

The half-life of carbon-14 is 5,730 years. How many grams of parent material will remain from a 100-gram sample of carbon-14 after 2 half-lives? (2 points)
		
75
		
25
		
12.5
		
6.25

Is it C?

anonymous · Answer

@gamer456148 Only two half-lives. So we start with 100g and lose half. Giving us [insert your answer], then we lose another half after going through a half life again, bring us down to [insert answer here].

anonymous · Answer

25

anonymous · Answer

Yep.

anonymous · Answer

Oh I thought it was referring to the years not the sample, so that is why I got confused