Answer:
Low pressure and high temperature :)
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Answer:
Average atomic mass = 6.96 amu.
Explanation:
Abundance of Li-6 = 4%
Abundance of Li-7 = 96%
Atomic mass of Li-6 = 6 amu
Atomic mass of Li-7 = 7 amu
Average atomic mass = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100
Average atomic mass = (4×6)+(96×7) /100
Average atomic mass = 24 + 672 / 100
Average atomic mass = 696 / 100
Average atomic mass = 6.96 amu.
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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Answer:
SiH4
Explanation:
4 hydrogens serve a the base and the Si is on top which forms a tetrahedral shape.
