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3 years ago

What physical meaning is attributed to ψ², the square of the wave function?

Chemistry

1 answer:

Zigmanuir [339]3 years ago

3 0

Answer:

The probability density (ψ2)

Explanation:

Indicates the probability of finding the electron in a certain region of space when it is squared ψ2.

This means that define2 defines the distribution of electronic density around the nucleus in three-dimensional space; a high density represents a high probability of locating the electron and vice versa.

The atomic orbital, can be considered as the electron wave function of an atom.

APPLICATIONS:

1.- Specify the possible energy states that the electron of the hydrogen atom can occupy and identify the corresponding wave functions medio, by means of a set of quantum numbers, with which an understandable model of the hydrogen atom can be constructed.

2.- It does not work for atoms that have more than one electron, but the problem is solved using approximation methods for polyelectronic atoms.

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A compound is 70.0% iron and 30.0% oxygen. Its molecular mass is 479.1 g/mol. Determine the

Strike441 [17]

Answer:

$Fe_6O_9$

Explanation:

Hello there!

In this case, since these problems about formulas, firstly require the determination of the empirical formula, assuming that the given percentages are masses, we can calculate the moles and mole ratio of oxygen to iron as shown below:

$n_{Fe}=70/55.85=1.25\\\\n_O=30/16=1.875$

In such a way, by rounding to the first whole number we multiply by 8 and divide by 5 to obtain:

$Fe_{2}O_{3}$

Whose molar mass is 159.69 g/mol and the mole ratio of the molecular to the empirical formula is:

479.1/159.69=3

Therefore, the molecular formulais:

$Fe_6O_9$

Regards!

4 0

2 years ago

If the methane contained in 2.50 L of a saturated solution at 25 ∘C was extracted and placed under STP conditions, what volume w

Sunny_sXe [5.5K]

116.6 x $10^{ -3$ } is the volume of methane contained in 2.50 L of a saturated solution at 25 ∘C that was extracted and placed under STP conditions.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

The solubility of methane in water at 25 degrees Celcius is 1.3 x $10^{ -3}$ M. It implies 1.3 x $10^{ -3}$ moles of methane are dissolved in one litre of water.

The number of moles of methane in 4 L of water can be calculated as follows:

Moles of methane = $\frac{1.3 . 10^{ -3} }{1L}$ x $\frac{4L}{1L}$

Moles of methane = 5.2 x $10^{ -3}$

STP refers to standard temperature and pressure. Under STP conditions, the temperature of the substance is 0 degrees celcius and its pressure is 1 atm.

An ideal gas is an imaginary gas comprising of a large number of randomly moving particles and the motion between such articles is considered to be perfectly elastic. The ideal gas equation describes the relationship between pressure, volume, temperature and number of moles of a gas.

The expression for ideal gas equation is as follows:

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 1 atm

V= ?

R= $0.082057338 \;L \;atm \;K^{-1}mol^{-1}$

T=273K

n=?

Putting value in the given equation:

$\frac{PV}{RT}=n$

5.2 x $10^{ -3} = \frac{1 \;atm\; X \;V}{0.082057338 \;L \;atm \;K^{-1}mol^{-1} X 273}$

V= 116.6 x $10^{ -3}$

Hence, 116.6 x $10^{ -3$ } is the volume of methane contained in 2.50 L of a saturated solution at 25 ∘C was extracted and placed under STP conditions.

Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

4 0

2 years ago

Identify the quantum numbers for the electron gained when an F2 ion becomes an F3 ion

zhuklara [117]

Answer: n= 3, l= 0 , m= 0 and s=[/tex]\frac{-1}{2}[/tex]

Explanation:

Principle Quantum Numbers : It describes the size of the orbital and the energy level. It is represented by n. Where, n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic quantum number : It describes the orientation of the orbital. It is represented as 'm'. The value of m ranges from -l to +l.

Spin quantum number: It describes the spin of the electron. It is represented as 's'. The value of s can be +1/2 or -1/2

$F^{2-}:11: 1s^22s^22p^63s^1$

$F^{3-}:12:1s^22s^22p^63s^2$

Thus electron enters 3s orbital , thus n= 3, l= 0 , m= 0 and s=[/tex]\frac{-1}{2}[/tex]

4 0

3 years ago

What must ALWAYS be used to convert between quantities of two different chemical substances?

Vedmedyk [2.9K]

Answer:

Balanced equations and mole ratios

In general, mole ratios can be used to convert between amounts of any two substances involved in a chemical reaction.

Explanation:

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2 years ago

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Which radiation can only be stopped by thick layers of dense metal? (2 points)

AfilCa [17]

Gamma rays have the highest penetrating power so it can only be stopped by thick layers of dense metal. :)

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3 years ago

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