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3 years ago

What is the difference between red phosphorus and white phosphorus?

Chemistry

2 answers:

RoseWind [281]3 years ago

8 0

Answer:

White phosphorusRed PhosphorusIt is insoluble in water but soluble in carbon disulphide.It is insoluble in both water and carbon disulphide.It undergoes spontaneous combustion in air.It is relatively

Explanation:

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oksano4ka [1.4K]3 years ago

3 0

Answer:

Red phosphorus and white phosphorus are two the most common and important allotropes of phosphorus. Red phosphorus is thermally more stable than white phosphorus. It is a white waxy solid. ... It turns yellow in colour in exposure to light, hence, it is also called as yellow phosphorus.

Explanation:

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Titanium has an HCP crystal structure, a c/a ratio of 1.669, an atomic weight of 47.87 g/mol, and a density of 4.51 g/cm3. Compu

IrinaK [193]

Answer : The atomic radius for Ti is, $1.45\times 10^{-8}cm$

Explanation :

Atomic weight = 47.87 g/mole

Avogadro's number $(N_{A})=6.022\times 10^{23} mol^{-1}$

First we have to calculate the volume of HCP crystal structure.

Formula used :

$\rho=\frac{Z\times M}{N_{A}\times V}$ .............(1)

where,

$\rho$ = density = $4.51g/cm^3$

Z = number of atom in unit cell (for HCP = 6)

M = atomic mass = 47.87 g/mole

$(N_{A})$ = Avogadro's number

V = volume of HCP crystal structure = ?

Now put all the values in above formula (1), we get

$4.51g/cm^3=\frac{6\times (47.87g/mol)}{(6.022\times 10^{23}mol^{-1}) \times V}$

$V=1.06\times 10^{-22}cm^3$

Now we have to calculate the atomic radius for Ti.

Formula used :

$V=6R^2c\sqrt{3}$

Given:

c/a ratio = 1.669 that means, c = 1.669 a

Now put (c = 1.669 a) and (a = 2R) in this formula, we get:

$V=6R^2\times (1.669a)\sqrt{3}$

$V=6R^2\times (1.669\times 2R)\sqrt{3}$

$V=(1.669)\times (12\sqrt{3})R^3$

Now put all the given values in this formula, we get:

$1.06\times 10^{-22}cm^3=(1.669)\times (12\sqrt{3})R^3$

$R=1.45\times 10^{-8}cm$

Therefore, the atomic radius for Ti is, $1.45\times 10^{-8}cm$

3 0

3 years ago

A chemist is studying the properties of a gas under various conditions. He observes that when the gas is at room temperature and

larisa86 [58]

Answer:

Ideal gas explains the property of gas that has no inter-molecular attractions irrespective of temperature and pressure.

Explanation:

Ideal gases assumes that the gases would experience no inter-molecular attraction and collision with other gases.
These gases are perfectly exhibiting elastic collision in nature.
The particle of gases moves slowly at lower temperature and the gases would become close when they exhibit high pressure.
The "closeness of the gas-particle" and "low-speed characteristics" are the important observations noted.
The inter-molecular forces deviate the property of gases from ideal gas behavior.

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3 years ago

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Which is a characteristic of mixtures ?

lisabon 2012 [21]

The characteristics of mixtures are:

a) they are made up of two of more substances

b) the two substances can be separated by physical means

c) there are two kinds of mixtures : homogenous and heterogenous

d) homogenous mixtures do not have any physicaly distinguished boundary

7 0

3 years ago

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The dust particles in water can be helped to settle down faster by

Korolek [52]

The dust particles in the water can be helped to settle down faster by Alum.

So, your answer is option B. Alum.

Hope this helps!

6 0

3 years ago

The concentration of Fe2 in a sample is determined by measuring the absorbance of its complex with ferroxine. The sample, measur

sdas [7]

Answer:

Absorbance of sample solution = 1.21

Absorbance of reagent blank = 0.205

Explanation:

In order to solve this problem we need to keep in mind the Lambert-Beer law, which states:

A = ε*b*C

Where ε is the molar absorption coefficient, b is the length of the cuvette, and C is the concentration.

By looking at the equation above we can see that if ε and C are constant; and b is 5 times higher (5.00 cm vs 1.00 cm) then the absorbance will be 5 times higher as well:

Absorbance of sample solution = 0.242 * 5 = 1.21

Absorbance of reagent blank = 0.041 * 5 = 0.205

8 0

3 years ago

What is the difference between red phosphorus and white phosphorus?​

What is the difference between red phosphorus and white phosphorus?