Question

7. If 100.0 grams of Hydrogen burns, how many moles of Water will form?

Answer 1

50moles of H₂O

Explanation:

Given parameters:

Mass of hydrogen burning = 100g

Unknown:

Number of moles of water formed = ?

Solution:

To solve this problem, we have to apply the mole's concept. We should first obtain the balanced equation for the reaction. Then express the mass as moles and compared to that of water.

Solve from the known to the unknown;

      Equation:

         2H₂     +     O₂    →     2H₂O

Number of moles of Hydrogen gas  = $\frac{mass}{molar mass}$

 Molar mass of H₂ = 2(1) = 2g/mol

  Number of moles = $\frac{100}{2}$  = 50moles

From the equation of the reaction;

         2 mole of H₂  produced 2 mole of H₂O;

Then 50 mole of  H₂ will produce 50moles of H₂O

50 mole of water will be formed

learn more:

Number of moles brainly.com/question/1841136

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