A certain compound was found to contain 78.2g Boron and 21.8 g Hydrogen. Its relative molecular mass is 28.0 g/mol. Find the empirical and the molecular formula. Show your work

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction