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1. Round the number 0.07535 to two significant figures a) 0.08 c) 00754 .0753 0.075 b)...
8) Which forrmula/name pair is incorrect? A) FeSO4 iron(II) sulfate B) Fe,(SO,),iron(III) sulfite C) Fe,(SO,),iron(...
8) Which forrmula/name pair is incorrect? A) FeSO4 iron(II) sulfate B) Fe,(SO,),iron(III) sulfite C) Fe,(SO,),iron(II) sulfide iron(II) sulfite iron(II) sulfide D) FeSO aitin E) FeS d Jeum od vd o ) dgnibnuoudv 9) When 125.0 g of ethylene (C2H4) burns in oxygen. How many grams of CO2 are formed? 0D oHAe09 O: 1oHA bas lom lom a) 392.9 g s2g of methane 15Wb) 250.0 g occu c) 57.50 g d) 327.0 g e) 4.4 g 10) Which compound has the...
Be sure to give your answers with the correct number of significant figures. 1. Over the...
Be sure to give your answers with the correct number of significant figures. 1. Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is: Fe20. (s) + 2Al(s) – 2Fe (1) + Al O2 (s) a. How many moles of iron (III) oxide must react in order to produce 3.5 mol of Fe? (1.25pts) b. What mass of iron (III) oxide reacted in order to...
31). 31) To convert a given number of moles into the number of atoms, one would...
31). 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/1 mol B) 1 mol/6.022 x 1023 atoms C) molar mass D) 6.022 x 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 32) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S, 32.06 g/mol] A) 6.02 x 1023 atoms B) 2.91 x 1023...
Q43. Write formulas for the following cations: a. Potassium: b. calcium: c. ammonium: d. lead(II) :...
Q43. Write formulas for the following cations: a. Potassium: b. calcium: c. ammonium: d. lead(II) : e. copper(I) : f. zinc: g. titanium(IV) : h. silver: i. nickel(III): j. hydrogen: k. tin(II) : l. mercury(II) : m. iron(III) : Q44. Write formulas for the following anions: a. fluoride: b. oxide: c. iodide: d. carbonate: e. hydrogen carbonate: f. phosphate: g. sulfide: h. sulfate: i. nitride: j. nitrate: k. phosphide: l. chloride:
1. Which statement is true? A) The process of diluting a solution in the laboratory is...
1. Which statement is true? A) The process of diluting a solution in the laboratory is much like preparing juice from a canned concentrate of the juice. B) Molarity is defined as the moles of solute divided by the liters of solvent. C) N2O5 has 2.5 times as many nitrogen atoms as oxygen atoms D) The number of formula units in 2.0 moles of MgCl2 is 6.022 x 1023 2. A 6.25 g sample of magnetite (Fe3O4) contains 4.52 g...
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C)...
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C) viscosity D) vapor pressure E) None of the choices are correct. mation of spherical water droplets on green 3 9) - um at constant pressure and temperature has the volume 40) 40) A balloon containing helium at constant pres doubled by adding a more helium. Which ' adding a more helium. Which statement(s) isare) TRUE? A) The number of moles of helium doubled. B)...
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D....
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D. 324.8 K E 289 2 K 22. Assign idation numbers, then determine which of the following is true 81 +5H,, 41, +450; +41,0 A. lodide ion is ridined B. lodide lon is the acidizing agent C. Sulfate lon is oxidized D. Hydrosulfuric acid (H,S) is reduced E. Sulfuric acid (H,SO) is the reducing 25. Fr, 0, (molar mas 159.7 g/mol) reacts with CO (molar...
1) What is the term for a compound containing two nonmetals? A) binary acid B) ionic...
1) What is the term for a compound containing two nonmetals? A) binary acid B) ionic compound C) molecular compound D) ternary acid 2) The compound TiO2 is classified as which of the following? A) binary acid B) ionic compound C) molecular compound D) ternary acid 3) What is the name for S2-? A) sulfur ion B) sulfide ion C) sulfite ion D) sulfate ion 4) What is the chemical formula for the nitrite ion? A) NO3- B) NO32- C)...
34. Chromium(III) hydroxide has Ksp 1.6 x 10-30. What is the molar solubility of Cr(OH)3 in a solution whose pH is maintained at 6.00? (A) 1.6 x 10-12 mol L-1 (C) 3.6 х 10-8 mol L-1 (B) 1.6 x 10- mol...
34. Chromium(III) hydroxide has Ksp 1.6 x 10-30. What is the molar solubility of Cr(OH)3 in a solution whose pH is maintained at 6.00? (A) 1.6 x 10-12 mol L-1 (C) 3.6 х 10-8 mol L-1 (B) 1.6 x 10- mol L-1 (D) 1.6 x 106 mol L-1 35. At 400 K, this reaction has Kp- 8.2 x 10. SO3(g)SO2(g)/ 02(g) What is Kp at 400 K for the following reaction? 2 SO3(g) 2 SO2(g) + O2(g) (B) 8.2 x...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e....
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
8) Which forrmula/name pair is incorrect? A) FeSO4 iron(II) sulfate B) Fe,(SO,),iron(III) sulfite C) Fe,(SO,),iron(II) sulfide iron(II) sulfite iron(II) sulfide D) FeSO aitin E) FeS d Jeum od vd o ) dgnibnuoudv 9) When 125.0 g of ethylene (C2H4) burns in oxygen. How many grams of CO2 are formed? 0D oHAe09 O: 1oHA bas lom lom a) 392.9 g s2g of methane 15Wb) 250.0 g occu c) 57.50 g d) 327.0 g e) 4.4 g 10) Which compound has the...
Be sure to give your answers with the correct number of significant figures. 1. Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is: Fe20. (s) + 2Al(s) – 2Fe (1) + Al O2 (s) a. How many moles of iron (III) oxide must react in order to produce 3.5 mol of Fe? (1.25pts) b. What mass of iron (III) oxide reacted in order to...
31). 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/1 mol B) 1 mol/6.022 x 1023 atoms C) molar mass D) 6.022 x 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 32) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S, 32.06 g/mol] A) 6.02 x 1023 atoms B) 2.91 x 1023...
1. Which statement is true? A) The process of diluting a solution in the laboratory is much like preparing juice from a canned concentrate of the juice. B) Molarity is defined as the moles of solute divided by the liters of solvent. C) N2O5 has 2.5 times as many nitrogen atoms as oxygen atoms D) The number of formula units in 2.0 moles of MgCl2 is 6.022 x 1023 2. A 6.25 g sample of magnetite (Fe3O4) contains 4.52 g...
39) What property of liquids explains the formation of leaves? A) surface tension B) adhesion C) viscosity D) vapor pressure E) None of the choices are correct. mation of spherical water droplets on green 3 9) - um at constant pressure and temperature has the volume 40) 40) A balloon containing helium at constant pres doubled by adding a more helium. Which ' adding a more helium. Which statement(s) isare) TRUE? A) The number of moles of helium doubled. B)...
21. What Kelvin temperature reading equals 61.2°F? A. -256.8 K B. 325.6 K C.-220.4 K D. 324.8 K E 289 2 K 22. Assign idation numbers, then determine which of the following is true 81 +5H,, 41, +450; +41,0 A. lodide ion is ridined B. lodide lon is the acidizing agent C. Sulfate lon is oxidized D. Hydrosulfuric acid (H,S) is reduced E. Sulfuric acid (H,SO) is the reducing 25. Fr, 0, (molar mas 159.7 g/mol) reacts with CO (molar...
1) What is the term for a compound containing two nonmetals? A) binary acid B) ionic compound C) molecular compound D) ternary acid 2) The compound TiO2 is classified as which of the following? A) binary acid B) ionic compound C) molecular compound D) ternary acid 3) What is the name for S2-? A) sulfur ion B) sulfide ion C) sulfite ion D) sulfate ion 4) What is the chemical formula for the nitrite ion? A) NO3- B) NO32- C)...
34. Chromium(III) hydroxide has Ksp 1.6 x 10-30. What is the molar solubility of Cr(OH)3 in a solution whose pH is maintained at 6.00? (A) 1.6 x 10-12 mol L-1 (C) 3.6 х 10-8 mol L-1 (B) 1.6 x 10- mol L-1 (D) 1.6 x 106 mol L-1 35. At 400 K, this reaction has Kp- 8.2 x 10. SO3(g)SO2(g)/ 02(g) What is Kp at 400 K for the following reaction? 2 SO3(g) 2 SO2(g) + O2(g) (B) 8.2 x...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
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Industry: Telecommunications in India
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