Calculate the number of days after the explosion for a sample of iodine-131 to go from 100% iodine-131 to less than 1% Iodine - 131

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?