Chemistry, 19.04.2021 22:10 GamerGirl15
An archeologist runs a carbon dating test on bones found in Olduvai Gorge in Tanzania. She discovers that the carbon-14 isotopes in the bones have undergone three half-lives. Carbon-14 has a half-life of 5,730 years. Approximately how old are the bones?
1,910 years old
3,000 years old
5,730 years old
17,190 years old
Answers: 3
Chemistry, 22.06.2019 03:40
Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.
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Chemistry, 22.06.2019 07:20
The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.
Answers: 1
Chemistry, 22.06.2019 17:00
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
Answers: 1
Chemistry, 22.06.2019 20:30
Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.
Answers: 1
An archeologist runs a carbon dating test on bones found in Olduvai Gorge in Tanzania. She discovers...
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