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Q.

Tungsten metal, W is used to make incandescent bulb filaments. The metal is produced from W03 by reaction with hydrogen. [Atomic mass W = 184]

WO3+3H2⟶W(s)+3H2O(g)

Calculate mass of WO3 required to produce 368 gm of W.

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a

464 gm

b

928 gm

c

116 gm

d

232 gm

answer is B.

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Detailed Solution

The required mass can be given as,

368184×232

=464 g

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