For a multistep reaction the observed order of the reaction is generally determined by the 1. activation energy. 2. ratio of reactant and product concentrations. 3. slowest reaction of the seq

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.