A chemist measures the energy change during the following reaction: 2Fe2O3(s) → 4FeO(s) + O2(g) ΔH= 560

Use the information to answer the following question. Calculate how much heat will be released or absorbed. Be sure your answer has the correct number of significant digits.

Astudent investigated some properties of lead and recorded the findings in the table below. property observation color dull gray density 11.3 g/cm3 volume of sample 3 cm3 melting point 327°c reaction with air lead oxide forms on the surface electrical conductivity conducts some electricity which statement is true with respect to the investigation? the student investigated only the physical properties of lead. the student investigated only the chemical properties of lead. the student investigated more physical properties than chemical properties of lead. the student investigated more chemical properties than physical properties of lead.