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    Identify the white flaky powder. how did it get there?

    Mortar is made by first heating chalk, then gently slaking and pulverizing the resulting hard material. Alternatively, slaked lime can be made from calcium chloride and lye (NaOH). CaCO3 <====> CaO + CO2 calcite lime CaO + H2O -------> Ca(OH)2 lime slaked lime...
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    a student determined to test the law of gravity for herself walks off a

    skyscraper 750m high,? a student determined to test the law of gravity for herself walks off a skyscraper 750m high, stopwatch in hand, and starts her free fall ( zero initial velocity). three second later superman arrives at the scene and dives off the roof to save the student. what must the...
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    what size of tires could fit my rim?

    I just got rims size 18"x8.5 Number of Bolts: 5 Bolt Pattern(s) (millimeters): 5x100 Offset: 35 whats the best choices of tires could fit on my 2000 Subaru Legacy
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