explain why elements Si Al and Fe which are abundant in the earths crust but are...
Homework Answers
Because Si Al and Fe can't exist as ions like other alkali metals and alkaline earth metals.
Sea water is an aqueous medium in which only ionic compounds can dissolve. Many ionic compounds like compounds of alkali metals and alkaline earth metals like NaCl and MgCl2 dissolve in sea water and exist as ions in sea water.
Compounds of Silicon Aluminum and Iron are not water soluble. So they can't exist in sea water.
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explain why elements Si Al and Fe which are abundant in the earths
crust but are...
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTIONS 1....
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTIONS 1. Explain why elements Si, Al, and Fe, which are abundant in the Earth's crust, are not abundant in seawater. 2. Define precipitate and precipitation reactions. 3. Identify the following compounds as either "soluble" or "insoluble". Soluble? Soluble? Compound NaCl AgCI AgNO3 Ag2SO4 Hg2SO4 Compound CaCl2 Ca(NO3)2 CaSO: CaCO3 Pb3(PO4)2 4. Write a net ionic equation for the reaction between an aqueous solution of lead(II)...
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTI...
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTIONS 1. Explain why elements Si, Al, and Fe, which are abundant in the Earth's crust, are not abundant in seawater. 2. Define precipitate and precipitation reactions. 3. Identify the following compounds as either "soluble" or "insoluble". Soluble? Soluble? Compound NaCl AgCI AgNO3 Ag2SO4 Hg2SO4 Compound CaCl2 Ca(NO3)2 CaSO: CaCO3 Pb3(PO4)2 4. Write a net ionic equation for the reaction between an aqueous solution of lead(II)...
Compare the elements B, A1, C, Si. a. Which has the most metallic character? OB Al...
Compare the elements B, A1, C, Si. a. Which has the most metallic character? OB Al Si b. Which has the largest atomic radius? OB ОА1 oc Si c. Which has the largest first ionization energy? OB Al O O O
Consider elements: Na, Mg, Al, Si, P A. Which has the highest IE2? B. Which...
Consider elements: Na, Mg, Al, Si, P A. Which has the highest IE2? B. Which is least metallic? C. Which is diamagnetic?
Question 12 • Which of the followings are the most abundant elements in organisms? carbon, oxygen,...
Question 12 • Which of the followings are the most abundant elements in organisms? carbon, oxygen, nitrogen, calcium carbon, hydrogen, nitrogen, oxygen carbon, sodium, hydrogen, nitrogen carbon, oxygen, phosphorus, hydrogen oxygen, hydrogen, calcium, nitrogen Question 13 Why is each element unique and different from other elements in chemical prope
please explain! :) PQ-28. Which pair of elements is listed in o which pair of elements...
please explain! :)
PQ-28. Which pair of elements is listed in o which pair of elements is listed in order of decreasing first ionization energy! (A) Na, Mg (B) Mg, AI (C) Al, Si (D) Si, P -29. When the species F, Na', and Ne are arranged in order of increasing energy for the removal of an electron, what is the correct order? (A) F< Nat < Ne (B) Nat <Ne <F (C) F <Ne < Nat (D) Ne <F...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
Arrange these elements in order of increasing electron affinity: Sr, N, Si, P, Ga, Al.
Arrange these elements in order of increasing electron affinity: Sr, N, Si, P, Ga, Al.
Fe, Co, and Ni are ferromagnetic, whereas Ru, Ir, and Pt are diamagnetic. Explain why magnetic...
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1. A common mineral in Earth's crust has the chemical composition of 34.55% Mg, 19.96% Si,...
1. A common mineral in Earth's crust has the chemical composition of 34.55% Mg, 19.96% Si, and 45.49% 0. What is its empirical formula? 2. How many milliliters of 0.100 MHNO, are needed to neutralize the following solution? Write the balanced molecular equation, complete ionic equation, and net ionic equation 58.5 mL of 0.0100 M Al(OH)3 3. a) Balance the following equations. b) Identify oxidizing and reducing agents. c) Determine the oxidation numbers of the elements involved in the redox...
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTIONS 1. Explain why elements Si, Al, and Fe, which are abundant in the Earth's crust, are not abundant in seawater. 2. Define precipitate and precipitation reactions. 3. Identify the following compounds as either "soluble" or "insoluble". Soluble? Soluble? Compound NaCl AgCI AgNO3 Ag2SO4 Hg2SO4 Compound CaCl2 Ca(NO3)2 CaSO: CaCO3 Pb3(PO4)2 4. Write a net ionic equation for the reaction between an aqueous solution of lead(II)...
BACKGROUND INFORMATION Read "4.7 Precipitation Reactions" (Page 169 - 172) in the textbook. PRE-LABORATORY QUESTIONS 1. Explain why elements Si, Al, and Fe, which are abundant in the Earth's crust, are not abundant in seawater. 2. Define precipitate and precipitation reactions. 3. Identify the following compounds as either "soluble" or "insoluble". Soluble? Soluble? Compound NaCl AgCI AgNO3 Ag2SO4 Hg2SO4 Compound CaCl2 Ca(NO3)2 CaSO: CaCO3 Pb3(PO4)2 4. Write a net ionic equation for the reaction between an aqueous solution of lead(II)...
Compare the elements B, A1, C, Si. a. Which has the most metallic character? OB Al Si b. Which has the largest atomic radius? OB ОА1 oc Si c. Which has the largest first ionization energy? OB Al O O O
Question 12 • Which of the followings are the most abundant elements in organisms? carbon, oxygen, nitrogen, calcium carbon, hydrogen, nitrogen, oxygen carbon, sodium, hydrogen, nitrogen carbon, oxygen, phosphorus, hydrogen oxygen, hydrogen, calcium, nitrogen Question 13 Why is each element unique and different from other elements in chemical prope
please explain! :)
PQ-28. Which pair of elements is listed in o which pair of elements is listed in order of decreasing first ionization energy! (A) Na, Mg (B) Mg, AI (C) Al, Si (D) Si, P -29. When the species F, Na', and Ne are arranged in order of increasing energy for the removal of an electron, what is the correct order? (A) F< Nat < Ne (B) Nat <Ne <F (C) F <Ne < Nat (D) Ne <F...
Problem 1. Assume that Mars formed from chemical elements that were able to freeze out of the cloud of gas around the forming Sun, and that the relative abundances in this frozen-out material was the same as that of solar atmosphere (see belowTable) for Mg, Si, Fe, Na, Al, and Ca. Assume that all elements except perhaps Fe are fully oxidized when they freeze out (as MgO, SiO2, FeO, Na20, Al20s, and CaO). Calculate and tabulate the fractions of the...
1. A common mineral in Earth's crust has the chemical composition of 34.55% Mg, 19.96% Si, and 45.49% 0. What is its empirical formula? 2. How many milliliters of 0.100 MHNO, are needed to neutralize the following solution? Write the balanced molecular equation, complete ionic equation, and net ionic equation 58.5 mL of 0.0100 M Al(OH)3 3. a) Balance the following equations. b) Identify oxidizing and reducing agents. c) Determine the oxidation numbers of the elements involved in the redox...
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