What is the molecular formula (hill method) of salicylic acid? Use the appropria

Question

What is the molecular formula (hill method) of salicylic acid? Use the appropriate capitalization of your atomic symbols Given the following atomic weights what is the molecular weight of salicylic acid? Give no decimals or extraneous marks C = 12, H = 1, N = 14, 0 = 16, P = 31 How many moles are in 3 9 g of salicylic acid? Use the molecular weights that you have already calculated Give two significant figures What is the molecular formula (Hill method) of acetic anhydride? Use the appropriate capitalization of your atomic symbols Given the following atomic weights what is the molecular weight of acetic anhydride? Give no decimals or extraneous marks C = 12, H = 1, N = 14, 0 = 16, P = 31

Explanation / Answer

1)
molecular formula of salicylic acid is
C7H6O3

2)
molecular weight = 7*C + 6*H + 3*O
= 7*12 + 6*1 + 3*16
=138 g

3)
molecular formula of acetic anhydride is
C4H6O3

4)
molecular weight = 4*C + 6*H + 3*O
= 4*12 + 6*1 + 3*16
=102 g

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