<h3>The molecular formula of this protein : C₁₈H₄₂O₁₂N₆</h3><h3>Further explanation </h3>
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
The principle of determining empirical formula and molecular formula
- Determine the mass ratio of the constituent elements of the compound.
- Determine the mole ratio by dividing the elemental mass with the relative atomic mass obtained by the empirical formula
- Determine molecular formulas by looking for values of n
Find mol ratio for every component :
![\tt \dfrac{17.16}{12}=1.43](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B17.16%7D%7B12%7D%3D1.43)
![\tt \dfrac{3.17}{1}=3.17](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B3.17%7D%7B1%7D%3D3.17)
![\tt \dfrac{13.71}{16}=0.857](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B13.71%7D%7B16%7D%3D0.857)
N (r=14 g/mol) :
Mass of Nitrogen :
40.4-(17.16+3.17+13.71)=6.36 g
![\tt \dfrac{6.36}{14}=0.454](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B6.36%7D%7B14%7D%3D0.454)
C : H : O : N = 1.43 : 3.17 : 0.857 : 0.454 = 3.15 : 7 : 1.89 : 1=3:7:2:1
Empirical formula : C₃H₇O₂N
Molecular mass of protein :
![\tt \dfrac{40.4}{0.07141}=565.75](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B40.4%7D%7B0.07141%7D%3D565.75)
(C₃H₇O₂N)n=565.75
(12.3+1.7+2.16+14)n=565.75
(89)n=565.75
n=6.4≈6
so the molecular formula : C₁₈H₄₂O₁₂N₆
Answer:
We need 41.2 L of propane
Explanation:
Step 1: Data given
volume of H2O = 165 L
Step 2: The balanced equation
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)
Step 3: Calculate moles of H2O
1 mol = 22.4 L
165 L = 7.37 moles
Step 4: Calculate moles of propane
For 1 mol C3H8 we need 5 moles O2 to produce 3 moles CO2 and 4 moles H2O
For 7.37 moles H2O we need 7.37/4 = 1.84 moles propane
Step 5: Calculate volume of propane
1 mol = 22.4 L
1.84 moles = 41.2 L
We need 41.2 L of propane
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Answer:
D
Explanation:
I explained how to do it on your other problem so look there :)
Answer:
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