Stoichiometry
A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the

Equivalent weight of the metal is 8
Atomic weight of the metal is 2
Atomic weight of the metal is 4
Equivalent weight of the metal is 4

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Stoichiometry
Pick out the wrong unit conversion of thermal conductivity.

1 BTU/ft².hr.°F/ft = 1.488 kcal/m². hr.°C/m
1 BTU/ft².hr.°F/inch = 1.488 kcal/m². hr.°C/m
1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K
1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F

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