If 2g of an isotope has a half life of 7 days ,the half life of 1g of sample will be

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

What does a numerical subscript following an element in a chemical formula mean?