In living organisms, C-14 atoms disintegrate at a rate of 15.3 atoms per minute per gram of carbon. A charcoal sample from an archaeological site has a C-14 disintegration rate of 9.16 atoms per minute per gram of carbon. Estimate the age of this sample in years. The half-life of C-14 is 5730 years. (enter only the number of years in standard notation, not the unit years)
Answers: 1
Chemistry, 21.06.2019 16:00
Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right
Answers: 1
Chemistry, 22.06.2019 06:30
Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
Answers: 1
Chemistry, 22.06.2019 09:00
Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?
Answers: 1
In living organisms, C-14 atoms disintegrate at a rate of 15.3 atoms per minute per gram of carbon....
Mathematics, 04.09.2020 17:01
English, 04.09.2020 17:01
Physics, 04.09.2020 17:01
Mathematics, 04.09.2020 17:01
Physics, 04.09.2020 17:01
Social Studies, 04.09.2020 17:01
Mathematics, 04.09.2020 18:01
Spanish, 04.09.2020 18:01
Mathematics, 04.09.2020 18:01
History, 04.09.2020 18:01