Carbon-14 has a half-life of 5,730 years. in how many years will 120 grams of carbon-14 decay to 15 grams? 11,460 years 17,190 years 22, 920 years 28,650 years

Which statement is best described as a atom

What is the mass of each element in a 324.8 sample of co2

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o