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3 years ago

How does a change in thermal energy affect the liquid in a thermometer?

1 answer:

3 0

the liquid will expand from the heat, and the mercury in the thermometer will rise or fall (depending if it is warming up or cooling).

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For the following formula, C4H9Cl, calculate the IHD and select all the types of unsaturation that might be present in the molec

Airida [17]

Answer:

The IHD = 0

There is no unsaturation in the compound C4H9Cl

Explanation:

IHD = Index for Hydrogen Deficiency .It determines total number of unsaturation or Pi- bond present in the molecule.It is calculated using the formula:

For Molecule:

$C_{c}H_{h}O_{o}N_{n}X_{x}$

Here . C = carbon

H = Hydrogen

O = Oxygen

N = Nitrogen

X = Halogen

The IHD is calculated as :

$\frac{2c-h-x+n+2}{2}$ ...............(1)

For example :

C4H8O2

Here c = 4 , h = 8 , o = 2 .

n = x=0

Put the value in equation (1) and find IHD

$\frac{2(4)-8-0+0+2}{2}$

$\frac{8-8+2}{2}$

$\frac{2}{2}$

IHD = 1

For C4H9Cl

c = 4 , h = 9 and x = 1

IHD for this molecule can be calculated as :

$\frac{2c-h-x+n+2}{2}$

$\frac{2(4)-9-1+2}{2}$

$\frac{8-9-1+2}{2}$

= 0

This means there is no unsaturation in the molecule.

Each bond is sigma bond and properly saturated.

5 0

3 years ago

Number of electrons absorbed by the main energy level (n = 4):

VARVARA [1.3K]

Answer:

Explanation:

Because 2 x n square gives the total energy level been absorbed = 2 x16

=32

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I think the answer is 82.5

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2 years ago

True or false? An organism may play more than one role in a food web

almond37 [142]

FALSE

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~~~~iln~~~~~~

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