Energy that is bound in the reactants of this reaction is ultimately transferred to the products in this reaction. That is, according to the first law of thermodynamics, if 20% of this energy is bound by the helium nucleus and 10% of this energy is bound by a free neutron, how much energy is
released in this reaction?

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol