Awooden tool is found at an archaeological site. estimate the age of the tool using the following information: a 100 gram sample of the wood emits 1120 β-particles per minute from the decay of carbon-14. the decay rate of carbon-14 in living trees is 15.3 per minute per gram. carbon-14 has a half-life of 5730 years.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Calculate the number of moles of ethane in 100 grams

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block