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Diano4ka-milaya [45]
4 years ago
12

What is the molecular formula of the molecule that has an empirical formula of C2H2O and a molar mass of 252.22 g/mol?

Chemistry
1 answer:
Kipish [7]4 years ago
3 0
Ok I got it wrong I think but I'm too lazy to delete all my hard work soooo.... merry Christmas?
Molar masses of
C = 12.0107
H = 2.016
O = 15.999
Now what we gots tuh do is take the masses and add them together, but we have to add 2 carbons and 2 oxygens because we are trying to find the molar mass of the empirical formula. So...
2(12.0107)+2(2.016)+15.999
24.0214+4.032+15.999 = 44.0524
Now that we have the molar mass of the empirical formula, we divide the 252.22 by it.
252.22/44.0524 = 5.7254
72.0642+12.096+95.994
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Explanation:

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For the oxidation of glucose C6 H12 O6 + 602 -- 6H2O + 6C02, How many moles of oxygen will it take to consume 3.9 moles of gluco
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Answer:

The answer to your question is 23.4 moles of Glucose

Explanation:

Data

moles of Oxygen = ?

moles of glucose = 3.9

-Balanced chemical reaction

           1C₆H₁₂O₆  +  6O₂   ⇒   6H₂O  +  6CO₂

Process

1.- To solve this problem, use the coefficient of the balanced chemical equation, and use proportions and cross multiplication.

           1 mol of C₆H₁₂O₆ -------------------- 6 moles of O₂

    3.9 moles of C₆H₁₂O₆ ------------------   x

                                  x = (3.9 x 6 ) / 1

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2.- Conclusion

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5 0
4 years ago
Hemoglobin, an iron-containing oxygen-transport protein, is 0.349% Fe by mass.
nirvana33 [79]

Answer : The molar mass of hemoglobin is, 6.40\times 10^4g/mol

Explanation : Given,

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or,

\text{Percent of Fe}=\frac{4\times \text{Molar mass of Fe}}{\text{molar mass of hemoglobin}}\times 100

Now put all the given values in this formula, we get:

0.349=\frac{4\times 55.85g/mol}{\text{molar mass of hemoglobin}}\times 100

\text{molar mass of hemoglobin}=64011.46g/mol=6.40\times 10^4g/mol

Thus, the molar mass of hemoglobin is, 6.40\times 10^4g/mol

3 0
3 years ago
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