____ N2 + ___ H2 --> ____ NH3 Reaction :
1 answer:
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Answer: The molecular formula will be
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
The empirical formula is
The empirical weight of = 6(12)+6(1)+1(16) = 94 g.
The molecular weight =
Now we have to calculate the molecular formula.
The molecular formula will be=
Answer:
The HCl is very strong since its pH is equal to 0.17.
Explanation:
The reaction between CaCO₃ and HCl is:
CaCO₃(s) + 2HCl(aq) ⇄ CaCl₂(aq) + CO₂(g) + H₂O(l) (1)
The number of moles of CaCO₃ is:
<u>Where</u>:
m: is the mass = 0.750 g
M: is the molar mass = 100.0869 g/mol
From the reaction (1) we have that 1 mol of CaCO₃ reacts with 2 moles of HCl, so the number of moles of HCl is:
Now, with the number of moles of HCl we can find its concentration:
Finally, the pH of the acid is:
The pH obtained is very low, so the HCl is very strong.
Therefore, the HCl is very strong since its pH is equal to 0.17.
I hope it helps you!