Answer to Question #73237 in General Chemistry for Chloe Lozano

Question

How many grams of WO3 would be required under the terms of question 19?

A. 183.8 g WO3
B. 231.9 g WO3
C. 1.1 × 105 g WO3
D. 1.1 × 106 g WO3
E. 1.1 × 107 g WO3
use the following: Tungsten metal is manufactured by the reaction of Tungsten Trioxide (WO3) with Hydrogen (H2). Water is a byproduct of this reaction.

Answer 1

The balanced chemical equation for the reaction is:
WO3 + 3 H2 → W + 3 H2O.
The mass of WO3 can be calculated from the mass any other reactant or product, for example, if question 19 gives the mass of H2, then the mass of WO3 is the following:
(x g H2)(1 mol H2/2.01588 g H2)(1 mol WO3/3 mol H2)(231.8382 g WO3/1 mol WO3) =
= y g WO3.