1. Give the molecular formula for the following structure.Use the format CxHy where x and y represent the subscripts.C9H182. Give the molecular formula for the following structure.Use the format CxHy where x and y represent the subscripts of CxHy.C9H143. Go to the JSME editor (follow the instructions in the JSME, SMILES string, Chemspider forum posting) to generate the SMILES string for the skeletal structure of the given molecules given that each atom obeys the octet/duet rule and no atom possesses a formal charge, for the molecule whose condensed structure is(a) Input the SMILES string for (CH3)3CCH2CHC(CH3)2C/C(C)=C\CC(C)(C)C(b) Input the SMILES string for (CH3)3CC(CH3)2CHCHCH3C/C=C/C(C)(C)C(C)(C)CCarbons are located at the vertices and the end of "sticks". The hydrogen number depends on how many bonds the carbon already possesses. Each carbon should have 4 bonds so add as many hydrogen's as you need to get 4 bonds around each carbon. Carbons are located at the vertices and the ends of "sticks". The hydrogen number depends on how many bonds the carbon already possesses. Each carbon should have 4 bonds so add as many hydrogen's as you need to get 4 bonds around each carbon.4. Below are the structures for benzonitrile, nicotine and caffeine.Each atom obeys the octet rule (duet for hydrogen) and no atom possesses a formal charge.(Lone pairs and non-methyl hydrogens are understood.)(a) What is the total number of hydrogens in the caffeine molecule?10(b) What is the total number of lone pairs in the nicotine molecule?2(c) What is the molecular formula for nicotine?Use the format CxHyNz where x, y and z represent the subscripts.C10H14N2(d) In the nicotine molecule the approximate angle abouta nitrogen bonded to the other type of nitrogena methyl group (CH3-) is: (the one which has a double bond) is:109° 120°(e) In the benzonitrile molecule there are how many of the following?Do not forget about understood hydrogens!5 pi bonds13 sigma bonds5. Draw the skeletal structure of the neutral molecule whose condensed formula is given below.Note: all non-hydrogen atoms obey the octet rule and all formal charges are zero.a) Input the SMILES string for:CH3CH2CH2COCH2CH2SHCCCC(=O)CCSb) How many understood lone pairs (of valence electrons) are contained in the molecule whose condensed formula is given above?4c) Select the hybridization of the oxygen.sp26. Select the formal charge of the indicated atom.a) O in species to the left+1b) N in species to the right -17. For each of the following assume all lone pairs are shown and each hydrogen is single bonded to the central atom.a) select the letter(s) that correspond(s) to the molecule(s) above for central atoms which have access to an octet?a, cb) Select the formal charge of the N in a.0c) Select the formal charge of the C in b.+1d) Select the formal charge of the C in c.-1e) Select the formal charge of the B in d.0To determine the formal charge of an atom, circle the atom (cutting the bonds in half) and including any lone pairs associated with that atom. Count the number of electrons in the circle and subtract that number from the family number found on the periodic table. C is in the 4gh family, N is in the 5th family, O is in the 6th family and F is in the 7th