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adell [148]
3 years ago
12

How to calculate moles

Chemistry
2 answers:
blondinia [14]3 years ago
8 0

Explanation:

First you must calculate the number of moles in this solution, by rearranging the equation. No. Moles (mol) = Molarity (M) x Volume (L) = 0.5 x 2. = 1 mol.

For NaCl, the molar mass is 58.44 g/mol. Now we can use the rearranged equation. Mass (g) = No. Moles (mol) x Molar Mass (g/mol) = 1 x 58.44. = 58.44 g.

ValentinkaMS [17]3 years ago
6 0

Answer:

Number of moles : Mass (g) ÷ relative atomic mass

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Balancing H2SO4+NH4OH —> H2O+(NH4)2SO4
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H₂SO₄   +    2NH₄OH    →     (NH₄)₂SO₄   +    2H₂O

Explanation:

  Unbalanced reaction equation:

                    H₂SO₄   +    NH₄OH    →     (NH₄)₂SO₄   +    H₂O

We can use a simple mathematical approach to balance this equation by solving simple algebraic equations.

         aH₂SO₄   +    bNH₄OH    →     c(NH₄)₂SO₄   +    dH₂O

a,b,c and d are simple coefficients that will balance the equation:

   Conservation of H: 2a + 5b = 8c + 2d

                               S:   a = c

                               O:  4a + b = 4c + d

                               N:   b = 2c

lets assume that a = 1

                             c= 1

                             b = 2

                  Solving for d from 4a + b = 4c + d

                   d = 4a + b -4c = 4(1) + 2 - 4(1) = 2        

 

                  H₂SO₄   +    2NH₄OH    →     (NH₄)₂SO₄   +    2H₂O

Learn more:

Balancing of equations brainly.com/question/6078553

#learnwithBrainly

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