The items amenable to detection

The items amenable to detection by soft x-rays areA.contrabandsB.lead in bulletsC.narcoticsD.genuine coins from counterfeit coins

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What are the number of moles

What are the number of moles of CO2 which contains 16 g of oxygen?A.0.5 moleB.0.2 moleC.0.4 moleD.0.25 mole

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What is the simplest formula for the compound

A 0.500 g sample of a compound containing only antimony and oxygen was found to contain 0.418 g of antimony and 0.082 g of oxygen. What is the simplest formula for the compound?

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A layer of peat beneath the glacial sediments

A layer of peat beneath the glacial sediments of the last ice age had a carbon-14 content of 25%of that found in living organisms. How long ago was this ice age?im really struggling please help!

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