A 5.00 g sample of a pure substance powder is heated, and the powder leaves 4.63g of a shiny, metallic liquid. Is the powder an element or a compound? Explain

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

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump