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dlinn [17]
2 years ago
15

If there are 1.55 x 1024 molecules of hydrogen peroxide (H2O2), what is the mass of thesample? ​

Chemistry
1 answer:
bezimeni [28]2 years ago
8 0

Answer:

87.54 g of H₂O₂

Explanation:

From the question given above, the following data were obtained:

Number of molecules = 1.55×10²⁴ molecules

Mass of H₂O₂ =.?

From Avogadro's hypothesis,

6.02×10²³ molecules = 1 mole of H₂O₂

Next, we shall determine the mass of 1 mole of H₂O₂. This can be obtained as follow:

1 mole of H₂O₂ = (2×1) + (2×16)

= 2 + 32

= 34 g

Thus,

6.02×10²³ molecules = 34 g of H₂O₂

Finally, we shall determine mass of H₂O₂ that contains 1.55×10²⁴ molecules. This can be obtained as follow:

6.02×10²³ molecules = 34 g of H₂O₂

Therefore,

1.55×10²⁴ molecules

= (1.55×10²⁴ × 34)/6.02×10²³

1.55×10²⁴ molecules = 87.54 g of H₂O₂

Thus, 87.54 g of H₂O₂ contains 1.55×10²⁴ molecules.

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<h2>The answer is 2.5 g</h2>

Explanation:

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Explanation:

This problem deals with balancing of chemical equations. In balancing chemical equations, the law of conservation of mass must be followed. This states that:

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This meaning of this is that; the number of atoms on each side of the expression must be the same.

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Now; if we have 5 oxygen gas, we multiply the equation through by 5:

 

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O                                  10                        10

learn more:

Balanced equation brainly.com/question/11102790

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