oceanography
posted by teal .
14C has a halflife of 5,730 years. If we start with 70 grams of 14C at time zero how many grams of 14C will be left after three halflives?
Respond to this Question
Similar Questions

chemistry/math
100g of bone contain ratio of 14C and 12C. 6.8% 14C is present in the living tissue, how old was the skeleton? 
12th grade
The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? 
PreCal
The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? 
Chemistry
The halflife for radioactive decay of 14C is 5730 years (it emits βparticles with energy of 0.16 MeV). An archaeological sample contained wood that had only 72% of the 14C found in living trees. What is its age? 
Chemistry
carbon 14 has a half life of 5715 years. If you start with a 5 gram sample of 14C, what mass is left after 15,000 years? 
Chem
The age of a bone was to be determined by 14C dating. 14C has a halflife of 5,730 years, and a Geiger counter shows that the 14C in living tissue gives 15.2 cpm g1 of carbon. If the same Geiger counter shows that the 14C in a sample … 
chemistry
Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive slope 14C present in the object. The amount of isolope decreases in a firstordrr process. If 12.8% of the original amount … 
URGENT! Due soon and I used 8 of 10 attempts
Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a firstorder process. If 14.5% of the original … 
science
Charcoal from an ancient campfire has a ratio of 14C to 12C that is one fourth that of new wood. About how old is the charcoal? 
oceanography
14C has a halflife of 5,730 years. If we start with 70 grams of 14C at time zero how many grams of14C will be left after three halflives?