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3 years ago

Convert 5.28 x 1019 molecules of C6H1206 to grams.

Chemistry

1 answer:

nlexa [21]3 years ago

5 0

Answer:

$m=0.0158g$

Explanation:

Hello there!

In this case, it is possible to comprehend these mass-particles problems by means of the concept of mole, molar mass and the Avogadro's number because one mole of any substance has 6.022x10²³ particles and have a mass equal to the molar mass.

In such a way, for C₆H₁₂O₆, whose molar mass is about 180.16 g/mol, the referred mass would be:

$m=5.28x10^{19}molecules*\frac{1mol}{6.022x10^{23}molecules}*\frac{180.16g}{1mol}\\\\m=0.0158g$

Best regards!

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6. Cuando se oxidan en el aire 12,120 g de vapor de Zinc se obtienen 15,084 g del óxido. ¿Cuál es la fórmula empírica del óxido?

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Answer:

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1. calcular la masa de cinc en gramos

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2. calcular gramos de Oxigeno

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3. calcular % de Zn y O

%m/m ( m soluto / m solc.) x 100

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O: 19.65 g / 16 g/mol = 1.228 mol

5. dividir entre el menor de los elementos

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O: 1.228 mol / 1.228 mol = 1

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