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Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent
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The number at the end of an isotope’s name is the number.
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Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n
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Portland cement (J. Aspdin) contains maximum % of CaO. Cement clinker contains
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