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3 years ago

Non-ferromagnetic materials tend to have ______ electrons in each orbital

Chemistry

2 answers:

Fittoniya [83]3 years ago

6 0

Answer:

Non-ferromagnetic materials tend to have <em>paired</em> electrons in each orbital.

Explanation:

The non ferromagnetic materials have all paired electrons in each orbital, or a small number of unpaired electrons.

This can be justified given that the pairing of electrons with opisite spins (one with -1/2 and the other with +1/2) counteracts the magnetic properties that the element could have.

Sveta_85 [38]3 years ago

4 0

<span>Non-ferromagnetic materials tend to have paired electrons in each orbital or very less unpaired electrons.

Example - Neon, its atomic number is 10 and all the electrons are pared. Now, Aluminum. Its atomic number is 13 with the electronic configuration 3</span> $p^{1}$ <span> i.e. only one unpaired electron in the p- orbital. Now, consider iron its atomic number is 26 and its configuration is 3</span> $d^{6}$ . It has more number of unpaired electrons. Thus, neon is non-magnetic, aluminum is also non-magnetic but iron is magnetic.

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How many grams of sodium metal are needed to react completely with 25.8 liters of chlorine gas at 293 Kelvin and 1.30 atmosphere

Leviafan [203]

First, we need to get the moles of Cl2 ( chlorine)

we can use the ideal gas formula to get n ( moles of gas) :

PV = nRT

when p is the pressure = 1.3 atm

and V is the volume = 25.8 L

R is the constant of the ideal gas = 8.314

T temperature in Kelvin = 293

∴ n = PV / RT

= 1.3 * 25.8 / 8.314* 293

= 0.0138 moles

according to the reaction equation:

2Na(s) +Cl2 → 2 NaCl

we can see from the balanced equation that the molar ration between Na & Cl2 = 2: 1

∴ moles of Na = moles of Cl2 / 2
= 0.0138 / 2
= 0.0069 moles

now, we have the moles of Na and by using the molar mass of Na = 22.99 g/mol

∴ Mass of Na = moles of Na * molar mass

= 0.0069 moles * 22.99

= 0.1586 g

6 0

4 years ago

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H 2O (l) → Ca(OH) 2 (s) In a p

Tomtit [17]

Answer:

The answer to your question is: 81%

Explanation:

Data

CaO = 2 g

Ca(OH)₂ = 2.14 g

Reaction balanced

CaO + H₂O ⇒ Ca(OH)₂

Molecular mass

Calcium oxyde = 40 + 16 = 56 g

Calcium hydroxide = 40 + 2 + 32 = 74 g

Process

Rule of three

56 g of CaO -------------- 74 g of Ca(OH)₂

2 g of CaO ------------- x

x = (2 x 74) / 56

x = 2.64 g of Ca(OH)₂

Percent yield

% Yield = $\frac{2.14}{2.64} x 100$

% yield = 81

8 0

3 years ago

which diagram best illustrates the ion-molecule attractions that occur when the ions of NaCl(s) are added to water

tatuchka [14]

Diagram is on the picture below.
Answer is: 1).
Sodium chloride is ionic compound and in the water dissociate in sodium cation (positive charge) and chloride anion (negative charge). Water is polar compound, oxagan has negative charge and hydrogen charge. Positive interact witn negative charge and negative with positive charge.

8 0

4 years ago

1. What is the state of matter of each of these materials at room temperature? a) gold b) gasoline c) oxygen d) olive oil e) mer

ehidna [41]

Answer:

a) gold - Solid

b) gasoline - liquid

c) oxygen - gaseous

d) olive oil - liquid

e) mercury (found in thermometers) - liquid

f) aluminum - solid

Explanation:

Matter exists in three states viz: solid, gas and liquid. Note that, room temperature is a neither hot or cold temperature, which is about 20-23°C.

A) Gold is a transition metal with the symbol Au. At a room temperature, Gold, like most metals are found as SOLIDS.

B) Gasoline is a liquid mixture of refined hydrocarbons majorly used as fuels.

C) Oxygen is a chemical element with symbol O. It is a constituent of natural air, which is a mixture of different gases including oxygen. Hence, at room temperature, Oxygen is a gas.

D) Olive oil is a vegetable oil got from olives. It is composed of fats and it's a liquid at room temperature.

E) Mercury is an element with symbol Hg. It is the only metallic element found naturally (at room temperature) as a liquid. It is used in thermometers.

F) Aluminum is another chemical element with symbol Al. It is a lustrous metal that occurs as a Solid in room temperature.

8 0

3 years ago

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydro

Dahasolnce [82]

The product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

<h3>What is the reaction between sulfuric acid and potassium hydroxide?</h3>

The result will be, H+ from H₂SO₄ reacts with OH- from KOH to generate H₂O. Also, K+ reacts with SO₄²⁻ to create K₂SO4₄

As a result, the balanced equation will be:

$\rm H_2SO_4 + 2KOH --- > K_2SO_4 + 2H_2O$

Thus, the product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. Sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

Learn more about potassium hydroxide

brainly.com/question/21904397

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6 0

3 years ago