Homework Answers
- Calcite has a hardness of 2-3. ( explanation : According to mohs scale of hardness, calcite has the hardness 3 [ defining mineral ] )
- Hornblende has a hardness of 5 - 6 ( explanation : According to mohs scale of hardness , hornblende has a hardness of 5-6 ) .
- Potassium feldspar has a hardness of 5-6. ( explanation : potassium feldspar has a hardness of 6 ) .
- Not a silicate mineral group : calcite. ( explanation : quartz has the chemical composition of SiO2 , mica is a sheet silicate group, hornblende is an inosilicate group, potsssi feldspar is the feldspar group of silicate minerals. Calcite is a carbonate mineral. )
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Calcite has a hardness of: O2-3 O5-6 Hornblende has a hardness of: O2-3 O5-6 Potassium feldspar...
Help with all please 46. The dashed line that separates crust from uppermost manitleis Due on...
Help with all please
46. The dashed line that separates crust from uppermost manitleis Due on Wed, 8 May 19 a. ecotone b. lithopause c. Mohorovicic discontinuity ("Moho d. lithification zone mantle is known as the: described as a: a. Convergent plate boundary b. Divergent plate boundary C. Transform plate boundary d. Hot spot (no plate boundary). 48. This silicate mineral cleaves into thin sheets Quartz (SiO2) a. b. Potassium feldspar (KAISaOs). C. Olivine ((Fe, Mg)2SiO4). d. Muscovite mica (KAlbSisO10(OH,...
A mineral with one direction of cleavage is: galena muscovite mica feldspar olivine quartz Question 2...
A mineral with one direction of cleavage is: galena muscovite mica feldspar olivine quartz Question 2 (1 point) Which of the following is a carbonate? diamond graphite halite calcite carbon dioxide Question 3 (1 point Electron transfer is involved in this type of bonding: metallic covalent ionic Question 4 (1 point) Which property describes the relationship between the weight of a mineral and the weight of an equal volume of water? cleavage density tenacity specific gravity Question 5 (1 point...
Question 34 3 pts A potassium feldspar mineral KAISI30g is found to contain 8.35ppm 40-K and...
Question 34 3 pts A potassium feldspar mineral KAISI30g is found to contain 8.35ppm 40-K and 0.932 ppm 40-Ar. Use the equation below to determine the age of the mineral and match to the nearest value. t= ti 2 In In(2) Arf Kf + 0.109 Kf where t is the age of mineral and t1/2 for 40-K= 1.248 billion years Kfis final amount 40-K in sample Arfis final amount of 40-Ar in sample 1.3 billion years 810 million years 580...
In calcite(CaCO3) the Ca2+ ion has a coordination number 6. Using the appropriate Pauling rule determine...
In calcite(CaCO3) the Ca2+ ion has a coordination number 6. Using the appropriate Pauling rule determine the ion environment around each O2- ion.
ntatinn of ave Effervescence: A mineral may react (fizz) when a drop of weak hydrochloric acid is placed on it...
ntatinn of ave Effervescence: A mineral may react (fizz) when a drop of weak hydrochloric acid is placed on its surface Habit: Characteristic form in which the mineral grows. Related to crystal structure. What would you use a streak plate for? How soft does a mineral have to be for you to scratch it with your fingernail? How hard does a mineral have to be for it to scratch a glass plate? Describe the difference between cleavage and fracture. Why...
Potassium chlorate decomposes in the following manner: 2 KCIO3 (s) → 2 KCl(s) + 3 O2...
Potassium chlorate decomposes in the following manner: 2 KCIO3 (s) → 2 KCl(s) + 3 O2 (s) If you start with 3.00 g of potassium chlorate, how many moles of oxygen will be produced? (first blank is a number, the next the unit) Assuming a temperature of 24.0°C and a pressure of 0.982 atm, how many liters of gas are produced? (first blank is a number the next the unit) Question 17 (6 points) A sample of 3.30 grams of...
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Which of the following statements is TRUE? Horizontal layers in sedimentary rocks are called "beds". Evaporites (e.g., rock salt) have a purely biological origin. Shale is a coarse-grained rock. A clastic sedimentary rock is one that forms from the precipitation of calcite from seawater Which of the following is MOST likely to trigger a rapid mass wasting process? a large earthquake decrease in moisture content reduction of mass...
The density of potassium, which has the BCC structure, is 0.855 g/cm^3. The atomic weight of...
The density of potassium, which has the BCC structure, is 0.855 g/cm^3. The atomic weight of potassium is 39.09 g/mol. Calculate the lattice parameter and the atomic radius of potassium
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth...
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth's surface, calcite or aragonite? (b) Calculate the pressure (still at room temperature) at which the other phase should become stable. All of the values in this table are for one mole of material at 298 K and 1 bar. Following the chemical formula is the form of...
Problems 3. The diagram labeled “Before Reaction" depicts a mixture of S and O2 (molecules in...
Problems 3. The diagram labeled “Before Reaction" depicts a mixture of S and O2 (molecules in a closed container a. Draw a diagram that depicts the results after the mixture reacts as completely as possible according to the equation: 2S + 302 → 2803. Note that matter should be conserved – there should be the same number of sulfur atoms (squares) and oxygen atoms (circles) present after the reaction as there was before. Before Reaction After Reaction b. From the...
Help with all please
46. The dashed line that separates crust from uppermost manitleis Due on Wed, 8 May 19 a. ecotone b. lithopause c. Mohorovicic discontinuity ("Moho d. lithification zone mantle is known as the: described as a: a. Convergent plate boundary b. Divergent plate boundary C. Transform plate boundary d. Hot spot (no plate boundary). 48. This silicate mineral cleaves into thin sheets Quartz (SiO2) a. b. Potassium feldspar (KAISaOs). C. Olivine ((Fe, Mg)2SiO4). d. Muscovite mica (KAlbSisO10(OH,...
A mineral with one direction of cleavage is: galena muscovite mica feldspar olivine quartz Question 2 (1 point) Which of the following is a carbonate? diamond graphite halite calcite carbon dioxide Question 3 (1 point Electron transfer is involved in this type of bonding: metallic covalent ionic Question 4 (1 point) Which property describes the relationship between the weight of a mineral and the weight of an equal volume of water? cleavage density tenacity specific gravity Question 5 (1 point...
Question 34 3 pts A potassium feldspar mineral KAISI30g is found to contain 8.35ppm 40-K and 0.932 ppm 40-Ar. Use the equation below to determine the age of the mineral and match to the nearest value. t= ti 2 In In(2) Arf Kf + 0.109 Kf where t is the age of mineral and t1/2 for 40-K= 1.248 billion years Kfis final amount 40-K in sample Arfis final amount of 40-Ar in sample 1.3 billion years 810 million years 580...
ntatinn of ave Effervescence: A mineral may react (fizz) when a drop of weak hydrochloric acid is placed on its surface Habit: Characteristic form in which the mineral grows. Related to crystal structure. What would you use a streak plate for? How soft does a mineral have to be for you to scratch it with your fingernail? How hard does a mineral have to be for it to scratch a glass plate? Describe the difference between cleavage and fracture. Why...
Potassium chlorate decomposes in the following manner: 2 KCIO3 (s) → 2 KCl(s) + 3 O2 (s) If you start with 3.00 g of potassium chlorate, how many moles of oxygen will be produced? (first blank is a number, the next the unit) Assuming a temperature of 24.0°C and a pressure of 0.982 atm, how many liters of gas are produced? (first blank is a number the next the unit) Question 17 (6 points) A sample of 3.30 grams of...
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Which of the following statements is TRUE? Horizontal layers in sedimentary rocks are called "beds". Evaporites (e.g., rock salt) have a purely biological origin. Shale is a coarse-grained rock. A clastic sedimentary rock is one that forms from the precipitation of calcite from seawater Which of the following is MOST likely to trigger a rapid mass wasting process? a large earthquake decrease in moisture content reduction of mass...
Problem 5.28. Calcium carbonate, CaCO3, has two common crystae forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book (a) Which is stable at earth's surface, calcite or aragonite? (b) Calculate the pressure (still at room temperature) at which the other phase should become stable. All of the values in this table are for one mole of material at 298 K and 1 bar. Following the chemical formula is the form of...
Problems 3. The diagram labeled “Before Reaction" depicts a mixture of S and O2 (molecules in a closed container a. Draw a diagram that depicts the results after the mixture reacts as completely as possible according to the equation: 2S + 302 → 2803. Note that matter should be conserved – there should be the same number of sulfur atoms (squares) and oxygen atoms (circles) present after the reaction as there was before. Before Reaction After Reaction b. From the...
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