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Chapter 21: Problem 3

Write chemical formulas for the following minerals: (a) calcite, (b) dolomite, (c) fluorite, (d) halite, (e) corundum, (f) magnetite, (g) beryl,(h) galena,(i) epsomite, (i) anhydrite.

Short Answer

Expert verified
The chemical formulas of the minerals are (a) Calcite: \(CaCO_3\), (b) Dolomite: \(CaMg(CO_3)_2\), (c) Fluorite: \(CaF_2\), (d) Halite: \(NaCl\), (e) Corundum: \(Al_2O_3\), (f) Magnetite: \(Fe_3O_4\), (g) Beryl: \(Be_3Al_2Si_6O_18\), (h) Galena: \(PbS\), (i) Epsomite: \(MgSO_4·7H_2O\), (j) Anhydrite: \(CaSO_4\).

Step by step solution

01

Write the Formula for Calcite

Calcite is a calcium carbonate, which consists of calcium (Ca), Carbon (C) and Oxygen (O). The formula for calcite is \(CaCO_3\).
02

Write the Formula for Dolomite

Dolomite is a calcium magnesium carbonate. The formula for dolomite is \(CaMg(CO_3)_2\).
03

Write the Formula for Fluorite

Fluorite is a calcium fluoride, and its formula is \(CaF_2\).
04

Write the Formula for Halite

Halite or rock salt is a form of sodium chloride. Its chemical formula is \(NaCl\).
05

Write the Formula for Corundum

Corundum is basically aluminum oxide. The formula for corundum is \(Al_2O_3\).
06

Write the Formula for Magnetite

Magnetite is an iron(II,III) oxide. The chemical formula for magnetite is \(Fe_3O_4\).
07

Write the Formula for Beryl

Beryl is a beryllium aluminium cyclosilicate and Its chemical formula is \(Be_3Al_2Si_6O_18\).
08

Write the Formula for Galena

Galena is lead sulfide, its chemical formula is \(PbS\).
09

Write the Formula for Epsomite

Epsomite is a form of magnesium sulfate. Its chemical formula is \(MgSO_4·7H_2O\).
10

Write the Formula for Anhydrite

Anhydrite is a mineral form of anhydrous calcium sulfate. Its chemical formula is \(CaSO_4\).

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Most popular questions from this chapter

Describe the main steps used to purify metals.

Briefly discuss the steelmaking process.

The following are two reaction schemes involving magnesium. Scheme I: When magnesium burns in oxygen, a white solid (A) is formed. A dissolves in \(1 M \mathrm{HCl}\) to give a colorless solution (B). Upon addition of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) to \(\mathrm{B},\) a white precipitate is formed(C). On heating, C decomposes to \(D\) and a colorless gas is generated (E). When \(\mathrm{E}\) is passed through limewater [an aqueous suspension of \(\left.\mathrm{Ca}(\mathrm{OH})_{2}\right], \underline{\mathrm{a}}\) white precipitate appears (F). Scheme II:Magnesium reacts with \(1 M \mathrm{H}_{2} \mathrm{SO}_{4}\) to produce a colorless solution (G). Treating G with an excess of NaOH produces a white precipitate \((\mathrm{H}) . \mathrm{H}\) dissolves in \(1 M \mathrm{HNO}_{3}\) to form a colorless solution. When the solution is slowly evaporated, a white solid (I) appears. On heating I, a brown gas is given off. Identify \(\mathrm{A}-\mathrm{I}\) and write equations representing the reactions involved.

Describe a medicinal or health-related application for each of the following compounds: \(\mathrm{NaF}, \mathrm{Li}_{2} \mathrm{CO}_{3}\) \(\mathrm{Mg}(\mathrm{OH})_{2}, \mathrm{CaCO}_{3}, \mathrm{BaSO}_{4}, \mathrm{Al}(\mathrm{OH})_{2} \mathrm{NaCO}_{3} .\) (Youwould need to do a Web search for some of these compounds.)

Describe the uses of the following compounds: \(\mathrm{NaCl}, \mathrm{Na}_{2} \mathrm{CO}_{3}, \mathrm{NaOH}, \mathrm{KOH}, \mathrm{KO}_{2}\)
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