Consider that an adult human has an average walking speed of about 5.63 km/hr and burns approximately 4.5 calories/minute. (1 cal = 4.184 kj) also, assume that this energy comes from the oxidation of foods, which is about 30% efficient. how much energy do you save by walking 1 km as opposed to driving a car that gets 30 miles/gal? (the density of octane is 703 kg/m3).

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.