When did Mendeleev organize the period table of elements?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)