Chemistry, 22.07.2019 18:10 sammyraegarrett
The carbon−14 decay rate of a sample obtained from a young tree is 0.266 disintegration per second per gram of the sample. another wood sample prepared from an object recovered at an archaeological excavation gives a decay rate of 0.178 disintegration per second per gram of the sample. what is the age of the object? (the half-life of carbon−14 is 5715 years.) × 10 years enter your answer in scientific notation.
Answers: 2
Chemistry, 22.06.2019 21:00
Need what is special about water as a compound? how does water regulate climate? what drives water evaporation? why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation? what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !
Answers: 1
Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule
Answers: 1
The carbon−14 decay rate of a sample obtained from a young tree is 0.266 disintegration per second p...
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