Answer:
The substance with a weaker molecular attraction
Milligram, Decigram, Gram, Decagram, Kilogram
Milligram (0.001 gram), Decigram (0.1 gram), Gram (1 gram), Decagram (10 grams), Kilogram (1000 grams),
Hope that helps :)!
Answer:
41.3kJ of heat is absorbed
Explanation:
Based in the reaction:
Fe₃O₄(s) + 4H₂(g) → 3Fe(s) + 4H₂O(g) ΔH = 151kJ
<em>1 mole of Fe3O4 reacts with 4 moles of H₂, 151kJ are absorbed.</em>
63.4g of Fe₃O₄ (Molar mass: 231.533g/mol) are:
63.4g Fe₃O₄ × (1mol / 231.533g) = <em>0.274moles of Fe₃O₄</em>
These are the moles of Fe₃O₄ that react. As 1 mole of Fe₃O₄ in reaction absorb 151kJ, 0.274moles absorb:
0.274moles of Fe₃O₄ × (151kJ / 1 mole Fe₃O₄) =
<h3>41.3kJ of heat is absorbed</h3>
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It’s the mentioning the amount of valence electrons in hydrogen, and the one about electrons share electrons to fill their shells.
Answer:
Explanation:
The balanced chemical equation :
To calculate the moles, we use the equation:
According to stoichiometry:
4 moles of produces = 902.0 kJ of energy
415.1 moles of produces = of energy
Thus the change in enthalpy is