Several salts of lead are only slightly soluble in water. These are PbCl2, PbI2, PbS and PbCO3.Which of these would be more soluble in acid solution compared with water

Which substance absorbs 58.16 kj of energy when 3.11 mol vaporizes? a)ch4 b)h2s c)co2 d)nacl

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Based on the equation and the information in the table, what is the enthalpy of the reaction?