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SpyIntel [72]
2 years ago
5

3.18 Moles within Moles and Molar Mass

Chemistry
1 answer:
lisov135 [29]2 years ago
5 0
shsjiswoosskskdkkswlmss
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2 H2 + O2 → 2 H2O <br> How many grams of H2O are produced when 2.50 moles of oxygen are used?
vodomira [7]

Answer:

90g

Explanation:

The equation for the reaction is given below:

2H2 + O2 → 2H2O

From the equation above,

1 mole of O2 produced 2 moles of H2O.

Therefore, 2.5 moles of O2 will produce = 2.5 x 2 = 5 moles of H2O.

Now let us convert 5 moles to H2O to grams to obtain the desired result. This is shown below:

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Number of mole of H2O = 5 moles

Mass of H2O = ?

Mass = number of mole x molar Mass

Mass of H2O = 5 x 18 = 90g

Therefore, 90g of H2O are produced

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