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6. Find the number of moles of each of the following. a. 6.023 x 1023 atoms...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
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...
m105%20Makeup%20Exam%20(2).pdf 31) 31) To convert a given number of moles into the number of atoms, one...
m105%20Makeup%20Exam%20(2).pdf 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/I mol B) 1 mol/6.022 1023 atoms C) molar mass D) 6.022 * 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 3 2) 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...
5) Choose the best classification of the reaction represented by the following equation: Pb(NO3)2(ay)+CaClg(ay)-PbCl20)+ Ca(NO3)2(a) A)...
5) Choose the best classification of the reaction represented by the following equation: Pb(NO3)2(ay)+CaClg(ay)-PbCl20)+ Ca(NO3)2(a) A) decomposition B) precipitation C) oxidation-reduction D) acid-base E) combustion 5) 6) 6) Choose the best classification of the reaction represented by the following equation: HBr(ay)+ KOH(ag)KBr(ag) + H20( A) acid-base B) precipitation C) combustion D) combination E) decomposition 7) 7) Magnesium hydroxide, Mg(OH)2, as "Milk of Magnesia" can be used to neutralize excess stomach acid, represented by HCl(ag) according to the chemical equation below....
5) How many moles of hydrogen gas are needed to react with oxygen to form one...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
60. The following quantities are placed in a container: 1.5 X 1024 atoms of hydrogen, 1.0...
60. The following quantities are placed in a container: 1.5 X 1024 atoms of hydrogen, 1.0 mol of sulfur, and 88.0 g of diatomic oxygen. (a) What is the total mass in grams for the collection of all three elements? (b) What is the total number of moles of atoms for the three elements? (c) If the mixture of the three elements formed a compound with molecules that contain two hydrogen atoms, one sulfur atom, and four oxygen atoms, which...
How many grams of sodium iodide are required to react completely with 3.01 x 1023 molecules...
How many grams of sodium iodide are required to react completely with 3.01 x 1023 molecules of chlorine? 2 NaI + Cl2 ------> I2 + 2 NaCl A. 1.50 g B. 37.5 g C. 150. g D. 74.9 g 1 points QUESTION 2 When 22.0 g of NaOH and 21.0 g of H2SO4 are mixed and react according to the reaction: 2 NaOH + H2SO4 ------> Na2SO4 + 2 H2O, which is the limiting reagent? A. NaOH B. H2SO4 C....
9) What is the total number of atoms in 0.139 mol of Fe(OH263-? A) 19.0 B)...
9) What is the total number of atoms in 0.139 mol of Fe(OH263-? A) 19.0 B) 2.64 98.37. 1022 D) 1.59. 1024 E) 184. 1024 10) How many carbon atoms are there in 52.06 g of carbon dioxide? A) 8.648.10-23 B) 3.134 x 1025 C) 7.122 1023 D) 5.206 X 1024 E) 1.424 . 1024 11) A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be A) NO B) NO2 CN204 D) N20 E) either NO2 or...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
1. Calculate the number of moles in each sample. a. 15.7 g CCl b. 1.8 x...
1. Calculate the number of moles in each sample. a. 15.7 g CCl b. 1.8 x 1021 formula units of NaC 2. Calculate the number of grams in each sample 1.23 mol magnesium bromide 7.310 x 1025 molecules of H202 a. b. 3. Calculate the mass percent of H in each of the following compounds. C2H2 C2HsCI a. b. 4. Calculate the empirical formula of each of the following Methy butyrate: 58.80 % C, 9.87 % H, 31.33 % O...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
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...
m105%20Makeup%20Exam%20(2).pdf 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/I mol B) 1 mol/6.022 1023 atoms C) molar mass D) 6.022 * 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 3 2) 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...
5) Choose the best classification of the reaction represented by the following equation: Pb(NO3)2(ay)+CaClg(ay)-PbCl20)+ Ca(NO3)2(a) A) decomposition B) precipitation C) oxidation-reduction D) acid-base E) combustion 5) 6) 6) Choose the best classification of the reaction represented by the following equation: HBr(ay)+ KOH(ag)KBr(ag) + H20( A) acid-base B) precipitation C) combustion D) combination E) decomposition 7) 7) Magnesium hydroxide, Mg(OH)2, as "Milk of Magnesia" can be used to neutralize excess stomach acid, represented by HCl(ag) according to the chemical equation below....
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
60. The following quantities are placed in a container: 1.5 X 1024 atoms of hydrogen, 1.0 mol of sulfur, and 88.0 g of diatomic oxygen. (a) What is the total mass in grams for the collection of all three elements? (b) What is the total number of moles of atoms for the three elements? (c) If the mixture of the three elements formed a compound with molecules that contain two hydrogen atoms, one sulfur atom, and four oxygen atoms, which...
9) What is the total number of atoms in 0.139 mol of Fe(OH263-? A) 19.0 B) 2.64 98.37. 1022 D) 1.59. 1024 E) 184. 1024 10) How many carbon atoms are there in 52.06 g of carbon dioxide? A) 8.648.10-23 B) 3.134 x 1025 C) 7.122 1023 D) 5.206 X 1024 E) 1.424 . 1024 11) A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be A) NO B) NO2 CN204 D) N20 E) either NO2 or...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
1. Calculate the number of moles in each sample. a. 15.7 g CCl b. 1.8 x 1021 formula units of NaC 2. Calculate the number of grams in each sample 1.23 mol magnesium bromide 7.310 x 1025 molecules of H202 a. b. 3. Calculate the mass percent of H in each of the following compounds. C2H2 C2HsCI a. b. 4. Calculate the empirical formula of each of the following Methy butyrate: 58.80 % C, 9.87 % H, 31.33 % O...
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