A student heats a 12.65 g sample of iron for 5 minutes until it reaches a constant temperature 100°C. They immediately add it to a beaker of water with an initial temperature of 21.3°C. After 2 minutes, the temperature of the water in the beaker remains constant at 23.5°C. How much energy did the sample of iron lose? (Note: the mass of water in the beaker is 50.0 gram)

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61