Camphor is a ketone compound and is one of the active ingredients in vicks products. if camphor has m+ = 152 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula?

           C₁₀H₁₆O

Explanation:

                   Molecular formula can be determined from parent peak by using rule of thirteen.

Rule of Thirteen:

First divide the parent peak value by 13 as,

                 = 152 ÷ 13

                 = 11.69

Now, multiply 13 by 11,

                 = 13 × 11 (here, 11 specifies number of carbon atoms)

                 = 143

Now subtract 143 from 152,

                 = 152 - 143

                 = 9

Add 9 into 11,

                 = 9 + 11

                 = 20 (hydrogen atoms)

So, the rough formula we have is,

                                                        C₁₁H₂₀

Now, add one Oxygen atom to above formula and subtract one Carbon and 4 Hydrogen atoms as these numbers are equal to atomic mass of Oxygen atom as,

                 C₁₁H₂₀   -------O-------->    C₁₀H₁₆O

Calculate Hydrogen deficiency index as,

                 HDI  =  (2x + 2 - y) / 2

where,

x = C atoms

y = H atoms

                 HDI  =  [2(10) + 2 - 16] / 2

                 HDI  =  (20 + 2 - 16) / 2

                 HDI  =  (22-16) / 2

                 HDI  =  6 / 2

                 HDI  =  3

It means, Camphor contains 1 double bond and two rings. As, HDI of double bond is 1 and HDI of one ring is 1.

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

im not exactly sure but i think its b!