B. There are 3.29 g of iodine-126 remaining in a sample originally containing 26.3 g of I-126. The malf-life of 1-126 is 13 days. How old is the sample?

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude