The amount of lead in drinking water is 0.025 mg/l. express this concentration in molality. {molar mass of lead is 207.2 g/mol and the density of water is 1.00 g/cm.}

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.