How many grams of iron (Fe) would be needed to generate 5.25 g of hydrogen gas (H2)?
1 answer:
Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.
<h3>What is stoichiometry?</h3>Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.
- Step 1: Write the balanced equation.
3 Fe + 4 H₂O ⇒ 4 H₂ + Fe₃O₄
- Step 2: Calculate the mass of Fe needed to produce 5.25 g of H₂.
We will consider the following relationships.
- The molar mass of Fe is 55.85 g/mol.
- The molar ratio of Fe to H₂ is 3:4.
- The molar mass of H₂ is 2.02 g/mol.
Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.
Learn more about stoichiometry here: brainly.com/question/16060223
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Answer: The pressure in atmospheres is 0.674 in the container if the temperature remains constant.
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
(At constant temperature and number of moles)
where,
= initial pressure of gas = 205 kPa
= final pressure of gas = ?
= initial volume of gas = 4.0 L
= final volume of gas = 12000 ml = 12 L (1L=1000ml)
(1kPa=0.0098atm)
Therefore, the pressure in atmospheres is 0.674 in the container if the temperature remains constant.