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alexandr402 [8]
4 years ago
15

Given the equation I2(s) + 62.4kJ --> I2(g), which of the following is true:

Chemistry
1 answer:
nadya68 [22]4 years ago
7 0
The statements that are true are that;
The reaction is exothermic;
H = -62.4 kJ
And also the reaction releases energy.
Exothermic reactions are chemical reactions that release energy to the environment to the environment causing the reaction mixture and the surroundings become more hotter; therefore the delta H is negative since the heat of the products is less that that of the reactants. 
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What would be the mass in grams of 1.204 x 1024 molecules of sulfur dioxide
melomori [17]

Answer:

mass of sulfur = 96 g

Explanation:

no of moles of sulfur dioxide in 1.204\times 10^{24} molecules = \frac{1.204\times 10^{24}}{avagadro number }= \frac{1.204\times 10^{24}}{6.023\times 10^{23}}

                                       = 2 moles

therefore mass of sulfur dioxide = moles×atomic number

                                                      =2×(16+32)

                                                      =96

6 0
4 years ago
Which of these statements is false?
AVprozaik [17]

Answer:

The answer is b

Explanation:

Hope it helps

8 0
3 years ago
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_Fe2O3 + 2CO —> _Fe + _CO2
soldi70 [24.7K]
<h3>Answer:</h3>

Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂(g)

<h3>Explanation:</h3>

Concept tested: Balancing of chemical equations

  • A chemical equation is balanced by putting appropriate coefficients on the products and reactants of the equation.
  • Balancing chemical equations ensures that chemical equations obey law of conservation of mass.
  • In this case; to balance the above equation we put the coefficients, 1, 3, 2, and 3 on the reactants and products.
  • Therefore; the balanced chemical equation for the reaction is;

      Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂(g)

8 0
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3 years ago
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12. In the modern periodic table, which of the following describes the elements with similar
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B. same group I believe
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