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Which best describes an element? a pure substance, a type of a mixture, a pure compound or an impure substance?
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A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?
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Which transition by an electron will release the greatest amount of energy? oa ob oc od
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Which best describes an element? a pure substance, a type of a mixture, a pure compound or an impur...
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