Pheromones are a special type of compound secreted by the females of many insect species to attract the males for mating. one pheromone has the molecular formula c19h38o. normally, the amount of this pheromone secreted by a female insect is about 1.8 10-12 g. how many molecules are there in this quantity?

Pheromones are the hormones secreted by females to attract male species. The molecular formula of pheromone is also known as 2-nonadecannone. The pheromone secreted by females is usually 1.8 10 -12 grams. The number of molecules in this quantity will be .

Given that,

Molecular formula of pheromone is

Also,

There are 19 molecules of Carbon or C, it will be = 19 X 12.01 = 228.19 g/mol

There are 38 molecules of Hydrogen or H, it will be = 38 X 1.01 = 38.38 g/mol

There are 1 molecule of Oxygen or O, it will be = 1 X 16 = 16 g/mol

Molecular mass of = 282.57 g/mol

Now, given that female produces 1.8 10-12 g of pheromones, then it will be:

The value of Avogadro's number of molecules in 1 mol is .

Therefore, the number of molecules in pheromone will be:

Thus, the number of molecules in will be .

To know more about pheromones, refer to the following link:

link

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