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3 years ago

What can you say about the amount of electrons found in the second ring

Chemistry

1 answer:

Amiraneli [1.4K]3 years ago

8 0

Answer:

The second ring in an atom can only hold up to 8 electrons.

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For each value of the principal quantum number n, what are the possible values of the electron spin quantum number?

Ede4ka [16]

Answer:

The values for spin quantum number +1/2 and - 1/2

Explanation:

Principal quantum number denoted by (n) is used to describe the shell or orbits that electrons are found. Principal quantum number can assume a value of n= 1,2, 3, 4,5............ which indicates K, L, M, N, O shell respectively.

To know the maximum number of electrons in each shell, the formula (2n²) can be used. The letter 'n' denotes the values of principal quantum number 1,2,3,4

For example

n=1 (K shell) has maximum number of 2 electrons
n=2 (L shell) has the maximum number of 8 electrons
n=3 (M shell) has the maximum number of 18 electrons
n=4 (N shell) has the maximum number of 32 electrons

All the electron in each shell will have a spin quantum number of +1/2 and - 1/2. One electron in each degenerate orbital will spin up (+1/2) while the other electron will spin down (-1/2).

7 0

3 years ago

If the DISTANCE traveled for the PURPLE line is 3.5m and it traveled for 1.75 seconds, what was it's speed?

julia-pushkina [17]

Answer:0.5 m/s

Explanation: Divide D: distance To L: line 3.5 divided by 1.75 gives you 0.5 m/s

distance/time

4 0

2 years ago

Read 2 more answers

you see a structural formula and which the symbols for elements are connected by a long Dash you can assume that the chemical bo

sergejj [24]

When you see a long dash joining two elements in the structural formula of a chemical molecule you can assume that the chemical bonds in the compound are simple bonds.

In the representation of chemical molecules long dashes are used to represent simple bonds since these bonds are longer than double and triple bonds, which are represented by = and ≡ respectively.

8 0

3 years ago

Read 2 more answers

Toluene, C7H8, is used in the manufacture of explosives such as TNT (trinitrotoluene). A 1.500 g sample of liquid toluene was pl

dusya [7]

Answer:

There were 63.67 kJ liberated

If 1 mol of toluene was burned, there would be liberated 3906 kJ / mole

Explanation:

Step 1: Data given

Mass of the toluene sample = 1.500 grams

The temperature of the calorimeter rose from 25.000 °C to 26.413 °C

Write the balanced chemical equation for the reaction in the calorimeter.

C7H8(l) + 9O2(g) ⇒ 7CO2(g) + 4H2O(l)

Step 2: Calculate Q of the calorimeter

Q = C * Δt

Q = 45.06 kJ/ °C * ( 26.413 - 25)

Q = 63.67 kJ

Step 3: Calculate moles of toluene

Moles toluene = mass toluene / molar mass toluene

Moles toluene = 1.500 grams /92.14 g/mol

Moles toluene = 0.0163 moles

Step 4: Calculate energy per mole

energy per mole = 63.67 kJ / 0.0163 moles = 3906 kJ / mole

6 0

3 years ago

Which of the substances in the chart has the least density?

3241004551 [841]

Answer:
Option-D (Piece of Wood) is the correct answer.

Explanation:
Density is related to mass and volume as,

Density = Mass / Volume
For Wood,
Density = 42.5 / 50

Density = 0.85

You can calculate remaining densities by yourself. Among all the density of Piece of Wood is the least.

3 0

3 years ago