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3 years ago

Predict whether each of the following molecules is polar or non-polar:a) IF,b) CS2, c) SO3, d) PCl3, e) SF6, f) IF5.

Chemistry

1 answer:

BlackZzzverrR [31]3 years ago

7 0

<h3><u>Answer;</u></h3>

Polar: IF, PCl3, IF5

Nonpolar: CS2, SO3, SF6

<h3><u>Explanation:</u></h3>

Polar molecules form when two atoms do not share electrons equally in a covalent bond.
A molecule is classified as a polar molecule when the arrangement of the atoms is such that one end of the molecule has a positive electrical charge and the other end has a negative charge.
A non-polar molecule does not have electrical poles.The electrons are distributed more equally.
Therefore, a non-polar molecule does not have a profusion of charges at the opposite ends. The majority of hydrocarbon liquids are non-polar molecules.

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List all orbitals from 1s through 5s according to increasing energy for multielectron atoms. Rank orbitals from smallest to larg

Paha777 [63]

Answer:

The given list of orbitals can be ranked as follow:

1s 2s 2p 3s 3p 4s 3d 4p 5s.

Explanation:

The given list of orbitals can be ranked as follow:

1s 2s 2p 3s 3p 4s 3d 4p 5s.

According to the Aufbau principal in ground state of elements electron first occupy the lower energy level then fill the higher energy levels. We know that there four subshells s, p, d and f. The maximum number of electrons in these subshells can be calculated by following formula:

2 (2l +1 )

and l = 0,1,2,3,....

maximum numbers of electrons in s subshell are,

l=0

2 ( 2(0) + 1)

so maximum electrons in s subshell are 2.

maximum numbers of electrons in p subshell are,

l = 1

2 ( 2(1) + 1)

2( 2 + 1

so maximum electrons in p subshell are 6.

maximum numbers of electrons in d subshell are,

l = 2

2 ( 2(2) + 1)

2( 4 + 1)

so maximum electrons in d subshell are 10.

maximum numbers of electrons in f subshell are,

l = 3

2 ( 2(3) + 1)

2( 6 + 1)

so maximum electrons in f subshell are 14.

Electron first fill 1s subshell then 2s subshell and in this way they goes to higher energy levels.

3 0

2 years ago

What is the percent composition of Cs in CsPO4?

Kay [80]

Answer:

58.3%

Explanation:

The formula of the compound is given as:

CsPO₄

Now, the percentage composition of Cs in the compound is = ?

So;

To find this parameter, find the molar mass of the compound:

Molar mass of CsPO₄ = 132.9 + 31 + 4(16) = 227.9g/mol

Percentage composition of Cs= $\frac{132.9}{227.9} x 100$ = 58.3%

3 0

3 years ago

A gas that has a volume of 28 liters, a temperature of 42°C, and an unknown pressure has its volume increased to 49 liters and i

kicyunya [14]

Answer:

7.35 atm

Explanation:

From the question we are given;

Initial volume, V1 as 28 L
Initial temperature, T1 as 42°C or 315 K
New volume. V2 as 49 L
New temperature, T2 as 27°C or 300 K
New Pressure, P2 as 4.0 atm

We are required to determine the initial pressure, P1

We are going to use the combined gas law...

According to the combined gas law,

$\frac{P_{1} V_{1} }{T_1} =\frac{P_2V_2}{T_2}$

Therefore, to get P1

$P_1=\frac{P_2V_2T_1}{V_1T_2}$

We get;

$P_1=\frac{(4.0)((49)(315)}{(300)(28)}$

$P_1=7.35$

Therefore, the initial pressure of the gas is 7.35 atm

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3 years ago

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klio [65]

answer:

1 with A, 3 with D

explanation:

look at the images they have inside them and see ones match

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malfutka [58]

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3 years ago