In a double-replacement reaction, . energy in the form of heat or light is often produced

the reactants are usually a metal and a nonmetal

one of the reactants is often water

the reactants are generally two ionic compounds in aqueous solution

What natural processes produce large quantities of co2

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Fossil fuels are organic compounds that are made from