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vladimir1956 [14]
2 years ago
9

Given the following unbalanced thermochemical equation, how many grams of carbon disulfide (CS2) will be produced along with 150

.0 kJ of heat? C(s) + S(s) + 89.3 kJ → CS2(l)
Chemistry
2 answers:
soldi70 [24.7K]2 years ago
8 0

C + 2S → CS2 + 89.3 kJ

Moles of CS2 = 150.0 kJ x (1 mol CS2/89.3 kJ) = 1.680 mol CS2

MW of CS2 = (12.01 + 2x32.06) g/mol = 76.13 g/mol

Mass of CS2 = 1.680 mol CS2 × (76.13 g CS2/1 mol CS2) = 128 g CS2

storchak [24]2 years ago
4 0

Answer:

127.7 grams

Explanation:

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Sodium carbonate (Na2CO3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to
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5.451 X 10³ kg of sodium carbonate must be added to neutralize 5.04×103 kg of sulfuric acid solution.

<u>Explanation</u>:

  • Sodium carbonate is used to neutralized sulfuric acid, H₂SO₄. Sodium carbonate is the salt of a strong base (NaOH) and weak acid (H₂CO₃). The balanced chemical reaction for neutralization is as follows:

                        Na₂CO₃ + H₂SO₄ ----> Na₂SO₄ + H₂CO₃

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5. A gas has a pressure of 1.26 atm and occupies a volume of 7.40 L. If the gas
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(1.26atm/7.40L)*2.93L = P2

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We use the formula PV=nRT. We convert the unit of pressure in kPa into atm.

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