1 mole of any substance is: 6.022*10²³ atoms or molecules.
9 moles of H₂S=9(6.022*10²³ molecules)=5.4198*10²⁴ molecules.
answer:there are 5.4198*10²⁴ molecules in 9.00 moles of H₂S.
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Explanation:
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Answer:
2.938 mol Pb(NO₃)₄
Explanation:
Step 1: Given data
- Moles of NH₄NO₃ to be produced: 11.75 mol
Step 2: Write the balanced equation
4 (NH₄)₃PO₄ + 3 Pb(NO₃)₄ = Pb₃(PO₄)₄ + 12 NH₄NO₃
Step 3: Calculate the number of moles of Pb(NO₃)₄required to produce 11.75 moles of NH₄NO₃
The molar ratio of Pb(NO₃)₄ to NH₄NO₃ is 3:12.
11.75 mol NH₄NO₃ × (3 mol Pb(NO₃)₄/12 mol NH₄NO₃) = 2.938 mol Pb(NO₃)₄
<span><span>A.) </span>makes it possible to
calculate ΔH for complicated chemical reactions </span>
<span>
Hess’s Law makes it
possible to calculate ΔH for complicated chemical reactions. Moreover, the principle
claims that the entire amount of “enthalpy” when the development or progression
of a chemical reaction is complete whether the reactions are created in a
single or numerous processes, it still changes. This law is now described as
the principle of conservation of energy, and part of the thermodynamics law as
the first. </span>
Answer: I mean hey why not
Explanation: