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a. Alloy of sodium with mercury.
b. Molecular formula of the common ore of aluminum.
c. The oxide that forms salt and water by reacting with both acid and base.
d. The device used for grinding an ore.
e. The nonmetal having electrical conductivity.
f. The reagent that dissolves noble metals.
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a. Alloy of sodium with mercury.
Answer::  Sodium amalgam, commonly denoted Na(Hg), is an alloy of mercury and sodium.
b. Molecular formula of the common ore of aluminum.
Answer::  Bauxite. The molecular formula is Al2O3.H2O
c. The oxide that forms salt and water by reacting with both acid and base.
Answer:: Amphoteric oxides
d. The device used for grinding an ore.

Answer::  Ball mill, is often used for grinding an ore and getting enough size reduction.
e. The nonmetal having electrical conductivity.
Answer:: Graphite is the only non-metal element that is a good conductor of electricity

f. The reagent that dissolves noble metals.

Answer:: Aqua Regia, 1:3 mixture of concentrated nitric and hydrochloric acids can dissolve noble metals such as gold, palladium, and platinum.

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