The yellow molecules (Y 3 ) react with the blue molecules (B 2 ) to form molecul

Question

The yellow molecules (Y3) react with the blue molecules (B2) to form molecules of Y2B, as shown in the figure below. Each circle represents one mole of material, and the atomic masses of Y and B are 50.3 and 70.5, respectively.

(a) How many grams of Y3 are in the container? (b) How many grams of B2 are in the container? (c) How many moles of Y2B molecules can be produced? mol (d) How many grams of Y2B could be produced? (e) How many moles of Y3 and B2 remain after complete reaction? (Note that at least one of the reactants must disappear.) Y3 remaining mol B2 remaining mol

Explanation / Answer

a) mass of Y3 = 12*50.3 = 603.6

b) mass of B2 = 6*70.5 = 423

c) No of moles of Y2B = 6 moles

d) mass of y2b = 6*(171.1) = 1026.6 grams

e) 0 mol Y3 , 0 mol B2

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