What concentration unit is measured in moles of solute per kilogram of
solvent?

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

What does the symbol (–hfus) indicate in a phase change?