2. How many sp hybridized carbon atoms are there in the completed Lewis structur

Question

2. How many sp hybridized carbon atoms are there in the completed Lewis structure? You are correct. Your receipt no. is 159-2395 Previous Tries 3. How many sp- hybridized atoms are there in the completed Lewis structure? Submit Answer Incorrect. Tries 7/10 Previous Tries 4. How many lone pairs are in the completed Lewis structure? You are correct. Previous Tries Your receipt no. is 159-5943Previous 5. How many sigma bonds are there in the completed Lewis structure? Submit Answer Incorrect. Tries 9/10 Previous Tries 6. How many pi bonds are there in the completed Lewis structure? You are correct. Your receipt no. is 159-5808 Previous Tries

Explanation / Answer

In the given structure,

no.of sp3 carbons = 2

no.of sp2 carbons = 8

no.of lone paires = 11

no.of sigma bonds = 26

no. of pi bonds = 5

Gasoline volume needed for one year = 1.57X1010 gallons = 3.785 X 1.57X1010 L

Major component of gasoline is isooctane, its percentage in gasoline = 91%

the volume of isooctane in 3.785 X 1.57X1010 L of gasoline = 3.785 X 1.57X1010 X 0.91 L = 5.41X1010 L

Its density = 0.692 g/mL = 0.692 kg/L

the mass of isooctane in 3.785 X 1.57X1010 L of gasoline = 5.41X1010 X 0.692 = 3.74X1010 kg

isooctane molar mass = 114.23 g/mol

no.of moles of 3.74X1010 kg isooctane = 3.74X1013/114.23 moles = 32.76X1010 moles

during this combustion theoritically produced CO2 moles = 32.76X1010X16/2 moles = 262.08X1010 moles

during this combustion theoritically produced CO2 mass = 262.08X1010 X M.Wt. of CO2 = 262.08X1010 X 44

= 11.53X1013 g (or) 11.53E13 g of CO2

no. of moles of N2 in 153.7 g of N2 = 153.7/28 = 5.49 moles

no. of moles of H2 in 37.16 g of H2 = 37.16/2 = 18.58 moles

1 mole of N2 needs 3 moles of H2

5.49 moles of N2 needed H2 in moles = 5.49X3 = 16.47 moles of H2

So, N2 is completely consumed

produced ammonia moles = 5.49X2 = 10.98 moles

produced ammonia mass = 10.98X M. Wt. of NH3 = 10.98 X 17 = 186.7 g of NH3

the remaining moles of H2 unreacted = 18.58-16.47 = 2.11 moles

the remaining moles of H2 unreacted mass = 2.11 X2 = 4.22 g of H2

BrF5 is Pyrimidal molecule (1st structure)

Best wishes.

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