gold + forge
astrolabe=star+mechanical clock
planisphere=star chart+astrolabe
in alchemy classic its 2 bacteria but it might be different in the original (assuming your playing alchemy classic)
You cant make alchemy classic, its a game! Though you can download it and play it!
2xBacteria=Cells
Algae + Plankton
fire+electricity
fire and water
caoutchouc
lplolol
freezer
In Alchemy Classic, you can create HNO3 (nitric acid) by combining H2O (water) with N2O5 (dinitrogen pentoxide).