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Good day.
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In this question, we will determine the name of each of the oxides and know what is the formula.
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So first, we assume the empirical formula of vanadium oxide is to v -o -n, where n is the one that we need to find in each given percent mass.
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So percent mass of vanadium in vanadium oxide is equal to mass of vanadium divided by total mass of vanadium oxide in one mole times 100%.
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So therefore let's start for letter a, percent mass is of vanadium is 76%.
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So substituting we have 76 % equals mass of vanadium is 50 .94 grams per mole divided by mass of the total mass of vanadium oxide.
01:30
Total mass of vanilla oxide is the sum of all the muscles, atomic mass of vanadium and the so we know that vanillae is 50 .94 grams per mole, but we don't know how many o we have in this oxide.
01:54
So that is our n, multiplied by 16 grams per mole, which is the mass of oxygen times 100%.
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Now rearranging and solving for n, n is equal to 1.
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Therefore, formula of this is v -o, and the name is vanadium monoxide.
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Next, we have letter b, which is percent mass of v is equal to 68 percent vanadium...