The half life for the decay of carbon-14 is 5.73 x 10° years. suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 42. bq. the activity in a similar-sized sample of fresh wood is measured to be 45. bq. calculate the age of the artifact. round your answer to 2 significant digits. years ?

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

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

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change