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3 years ago

Describe the spacing and motion of the particles in a solid.

1 answer:

7 0

Answer: In a solid, the particles pack together as tightly as possible in a neat, the particles are held together too strongly to allow movement from place to place but the particles do vibrate about their position in the structure.

Explanation:

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Electric current where all of the electrons flow in one constant direction <br>

Likurg_2 [28]

An electric current that flows continuously in a single direction is called a direct current

5 0

3 years ago

g Identify limiting reactants (mole ratio method). Close Problem Identify the limiting reactant in the reaction of bromine and c

love history [14]

Answer:

(i) Cl₂ is a limiting reactant

(ii) The amount of excess reactant = 4.8 g

Explanation:

Br₂(g) + Cl₂(g) → 2 BrCl(g) ---------------------------(i)

Calculation of no. of moles

$Moles of Br_{2} = \frac{weight}{Molecular weight} = \frac{29.7}{160} =0.18$

$Moles of Cl_{2} =\frac{11.2}{71} = 0.15 mole$

Using mole ratio method to find the limiting reactant and Excess reactant.

$\frac{Mole}{Stoichiometry} (for Br_{2} ) = \frac{0.18}{1} = 0.18$

$\frac{Mole}{Stoichiometry}(for Cl_{2}) =\frac{0.15}{1}=0.15$

So $Cl_{2}$ is a limiting reactant and Br₂ is excess reactant.

The amount of excess reactant = 0.18 - 0.15 = 0.03 mole = 4.8 g

5 0

3 years ago

When an alkaline earth carbonate is heated, it releases CO₂, leaving the metal oxide. The temperature at which each Group 2A(2)

Kruka [31]

We can prepare CaCO₃ and MgO from dolomite.

<h3 /><h3>What is Dolomite?</h3>

Common rock forming mineral is called dolomite.
It's chemical composition is CaMg(CO₃)₂.
The component of the sedimentary rock is called dolostone.
It is the primary component of the metamorphic rock known as dolomitic marble.
Limestone that contains some dolomite is known as dolomitic limestone.

Dolomite is a mineral which is rarely found in the environment , but dolostones are the minerals which are very commonly found.

<h3>Properties of Dolomite:</h3>

The trigonal-rhombohedral system is used to crystallise dolomite
It forms crystals that are white, tan, green, or pink in colour.
Dolomite is a double carbonate of calcium and magnesium ions arranged in an alternating structural structure.
Granular dolomite is a medium to dark grey, brown, or white granular dolomite found in rocks.
The lustre varies from dull to subvitreous. Dolomite, like calcite, cleaves into six-sided polyhedrons with diamond-shaped faces.
Dolomite vein grains may be several centimetres in diameter.

<h3>Uses of Dolomite:</h3>

Ornamental stone is used as Dolomite, and a magnesium oxide source, as well as used in the Pidgeon magnesium production process.
Dolomite is often used in place where calcite limestone is used as as a flux for the smelting of iron and steel when calcite limestone is not available or very expensive.
Therefore, it is also called dolomite limestone.
Dolomite and dolomitic limestone are often used in horticulture as a pH buffer and magnesium source in soils .
Calcined dolomite is also used as a catalyst invery high-temperature gasification of biomass in order to kill tar.

<h3>Preparation of CaCO₃ and MgO from dolomite:</h3>

Dolomite is a double salt which consists of calcium carbonate (CaCO3) and magnesium carbonate (MgO) and it is one of the two forms of limestone.
This dolomite is found in the Bangkalan area, which only used in landfill and used to make light stone. Existence the great potential for dolomite as a biomaterial then in this research was carried by making CaCO3/MgO from dolomite using a simple calcination method at 600°C, 700°C and 800°C for one hour From the results of XRD found that the CaCO3/MgO phase was formed optimally at a temperature of 700°C.

Thus from the above conclusion we can say that, we can prepare CaCO₃ and MgO from dolomite.

Learn more about Dolomite here :brainly.com/question/10283539

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8 0

1 year ago

What charged particle is produced during ionic bonds

Setler79 [48]

Answer:

An ionic bond is formed by the complete transfer of some electrons from one atom to another. The atom losing one or more electrons becomes a cation or a positively charged ion. The atom gaining one or more electrons becomes an anion which is a negatively charged ion.

5 0

3 years ago

suppose you carry out a tlc separation of acetaminophen and phenacetin on silica gel using a nonpolar developing solvent. which

kakasveta [241]

Non-volatile mixtures can be separated using a process called thin layer chromatography (TLC). Since acetaminophen has a hydroxyl group, it is more polar than phenacetin.

<h3>Does acetaminophen or phenacetin have a lower Rf value?</h3>

Since acetaminophen has a hydroxyl group, it is more polar than phenacetin. Phenacetin will be more soluble and migrate to the top than the polar component because we are employing a non-polar solvent.

Non-volatile mixtures can be separated using a process called thin layer chromatography. The experiment is carried out on a piece of glass, plastic, or aluminum foil that has been lightly covered with an adsorbent substance. Typically, silica gel, cellulose, or aluminum oxide are utilized as the substance.

Because acetaminophen is more polar than phenacetin and nonpolar molecules pass through silica gel more quickly than polar ones do, acetaminophen would have a lower Rf value.

To learn more about TLC separation refer to:

brainly.com/question/24031676

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5 0

1 year ago