Technetium-104 has a half life of 18.0 minutes. how much of a 165.0 g sample remains after 90.0 minutes?

If a fossil sample originally contained 5 grams of carbon-14 and the half-life of carbon-14 is 5,700 years. After 11,400 years how many grams of carbon-14 would remain

Why is coal non renewable

What will be the total number of molecules of nadh, fadh2, and gtp that are synthesized if the citric acid cycle repeats 9 times?

How does wind effect precipitation

Which piece of evidence provides the strongest support for the theory that all living things evolved from a common ancestor? Charles Darwin, for 7 grade

What is an alloy consisting primarily of iron and carbon

How many moles of H2O are there in1.0g of H20?

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener? What changes occur at the molecular level when ice cream melts and forms a liquid?

a gas has a volume of 6 liters and a pressure of 1.5 atm. if the container is compressed to a volume of 2 liters, what will the pressure of the gas be?

When metals react with nonmetals, an ionic compound generally results. what is the predicted general formula?