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tia_tia [17]
3 years ago
11

What are 5 responsibilities a citizen has in taking part in public affairs

Chemistry
1 answer:
zimovet [89]3 years ago
3 0
1. To vote 
2. To abide by laws 
3. To contribute to society positively 
4. To be kind to people around you 
<span>5. To pass on the top four to your children and neighbors</span>
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Problem 4
Hunter-Best [27]
<h3>Answer:</h3>

1.93 g

<h3>Explanation:</h3>

<u>We are given;</u>

The chemical equation;

2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l) ΔH = -3120 kJ​

We are required to calculate the mass of ethane that would produce 100 kJ of heat.

  • From the equation given;
  • 2 moles of ethane burns to produce 3120 Kilo joules of heat
  • Therefore;

Number of moles that will produce 100 kJ will be;

= (2 × 100 kJ) ÷ 3120 kJ)

= 0.0641 moles

  • But, molar mass of ethane is 30.07 g/mol

Therefore;

Mass of ethane = 0.0641 moles × 30.07 g/mol

                          = 1.927 g

                          = 1.93 g

Thus, the mass of ethane that would produce 100 kJ of heat is 1.93 g

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Laws differ from theories because laws do not provide
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C. An explanation

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