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if 76 is divided into four parts proportional to 7,5,3.4 then the smallest part is:

Medium

Solution

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Correct option is A)

Four parts proportional to

7,5,3 and 4

∴ Four part are equal to7x,5x,3x, and 4x.

∴7x+5x+3x+4x=76

∴19x=76

∴x=

19

76

∴x=4

∴7x=4×7=28

∴5x=5×4=20

∴3x=3×4=12

∴4x=4×4=16

∴ For parts are 28,20,12 and 16.

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Draw the resonating structures of aniline.

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Hint:The resonance structures of aniline are drawn by first displacing the lone pair of electrons on the nitrogen to the bond between C and N. This results in formation of a double bond between C and N with N getting a positive charge due to the donation of electrons.

Complete answer:

- Aniline has the chemical formula C6H5NH2 . It is an organic compound that consists of a phenyl group attached to an amine group.

- Aniline is considered to be the simplest aromatic amine.

- Aniline has the odour of a rotten fish.

- Aniline has 5 resonating structures.

Answer:

The order of the reaction is the power dependence of the rate on the concentration of each reactant.

Molecularity is the number of reactants that take part in a rate-determining step.

Explanation:

The order of the reaction is the power dependence of the rate on the concentration of each reactant. This means for a first-order reaction rate is dependent only on one reactant. Second-order reaction rate dependent on two reactants or square of the concentration of single reactant.

On the other hand, molecularity is the number of reactants that take part in a rate-determining step. In the case of unimolecular reactions, there is only one reactant in the reaction. If there are 2 molecules of the reactant that participate in a reaction it is bimolecular.

Molecularity is a whole number other than zero which is between 1-3.

whereas order can be either whole number or fraction between 0-3.

Molecularity is a theoretical value and order is experimental.

Answer:

50 in first vertical

55 in second vertical

Answer:

Initially, there were 50 employees in 1 vertical and 55 in another vertical.

Step-by-step explanation:

Let there be 'x' employee in one vertical and 'y' in another vertical.

It is given that [tex]\frac{x}{y}[/tex] = [tex]\frac{10}{11}[/tex]

=> 11x = 10y

=> 11x - 10y = 0          --(i)

Now, 20 employees are added in each vertical.

Therefore, the new number of employees in 1st vertical = x + 20

and the new number of employees in 2nd vertical = y + 20

Now, the ratio becomes,

[tex]\frac{x+20}{y+20}[/tex] = [tex]\frac{14}{15}[/tex]

=> 15 (x + 20) = 14 (y + 20)

=> 15x + 300 = 14y + 280

=> 15x - 14y = 280 - 300

=> 15x - 14y = -20             --(ii)

Multiplying equation (i) by 14 and equation (ii) by 10

=> 154x - 140y = 0

    150x - 140y = -200

=> 4x = 200

=> x = 50

Substituting x = 50 in equation (i), we have,

11*50 - 10y = 0

=> 550 = 10y

=> y = 55

Therefore, initially, there were 50 employees in 1 vertical and 55 in another vertical.