A lab sample of X-23 is decaying and you need to know how long the sample has been left out of protection. The ratio of X-23 to X-20 is measured to be approximately 1.5% of the ratio measured in a new sample. The half-life of X-20 is 57 days. Determine how long this sample sat in the lab.

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ

How to convert a density of 0.791g/cm3 to lb/ft3