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Aleks [24]
3 years ago
8

How many moles of a solute is contained in 500mL of a 2.5 M solution?

Chemistry
1 answer:
Pavlova-9 [17]3 years ago
8 0

Answer:

100M

Explanation:

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3 years ago
in the following reaction, how many grams of benzene (C6H6) will produce 42 grams of CO2? 2C6H6 + 15O2 → 12CO2 + 6H2O
Mrrafil [7]

Answer: -

12.41 g

Explanation: -

Mass of CO₂ = 42 g

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Number of moles of CO₂ = \frac{42}{44 g/mol}

= 0.9545 mol

The balanced chemical equation for this process is

2C₆H₆ + 15O₂ → 12CO₂ + 6H₂O

From the balanced chemical equation we see

12 mol of CO₂ is produced from 2 mol of C₆H₆

0.9545 mol of CO₂ is produced from \frac{2 mol C6H6 x 0.9545 mol  CO2}{12 mol CO2}

= 0.159 mol of C₆H₆

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Mass of C₆H₆ =Molar mass x Number of moles

= 78 g / mol x 0.159 mol

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