How many grams of Al are in 1.38 * 1023 molecules of Al2O3 if the atomic...
How many grams of Al are in 1.38 * 1023 molecules of Al2O3 if the atomic mass of Al is 27.0 g/mole, O is 16.0 g/mole, and Al2O3 is 102.0 g/mole (the final answer should have the correct number of significant figures)?
Here is my work: (1.38*10^23 molecules) (1mol / 6.022*10^23 molecules) (27.0 gram/ mol)= 6.1873 I counted 3 Sig Fig so I rounded my answer to 6.19.... Another thought was (1.38*10^23 molecules) (54grams /1 mol) (1mol/6.022*10^23) but that answer was wrong too...
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How many grams of Al are in 1.38 * 1023 molecules of
Al2O3 if the atomic...
how many grams of HNO3 are in 4.055 x10^22 molecules of HNO3? This is how they...
how many grams of HNO3 are in 4.055 x10^22 molecules of HNO3? This is how they have the equation set up. 4.055 x 10^22 molecules HNO3 x 1 mol HNO3 / 6.022 x 10^23 molecules HNO3 x 63.018 g HNO3/ 1 mol HNO3= I cant get the correct answer using their equation.
How many grams of F are in 1.64 * 1022 molecules of XeF6 if the atomic...
How many grams of F are in 1.64 * 1022 molecules of XeF6 if the atomic mass of Xe is 131.3 g/mole, F is 19.0 g/mole, and XeF6 is 245.3 g/mole (the final answer should have the correct number of significant figures)
1. Choose the correct answer(s) to complete the following statement: One mole of oxygen (O2) gas...
1. Choose the correct answer(s) to complete the following statement: One mole of oxygen (O2) gas is equivalent to _____________________. I. 6.022 × 1023 molecules of oxygen II. 6.022 × 1023 atoms of oxygen III. one mole of oxygen atoms IV. two moles of oxygen atoms 2. 50.0 g of Cl2 contains ________ mol Cl2. a. 0.705 b.1.41 c. 4.24 × 1023 d. 1775 e. 50.0 3. The number of grams in 0.350 mol of Na is a. 11.0. b....
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....
Question 4 of 12 > How many molecules of Nacio, are in 4.361 g of NaCIO,?...
Question 4 of 12 > How many molecules of Nacio, are in 4.361 g of NaCIO,? Show the conversions required to solve this problem and calculate the molecules of Nacio, i mol I mol NaCIO 6.022 x 10" molecules Nacio, 4.361 g NaCIO = ? molecules Nacio 122.44 g Nacio 1 mol Nacio Answer Bank amount of Nacio, = 2.144 x1022 molecules Nacio
11.158 1020 +1.15x1020 + 3,45 x 1020) 5. 75 x 1020 4. How many times would...
11.158 1020 +1.15x1020 + 3,45 x 1020) 5. 75 x 1020 4. How many times would you have to write your name to use 1.00 mol of calcium carbonate? Page 9 CES HUX mol H20 - 1.5058 mot 6.022x10² molecules 32.91 mol Naci x 58.449 18.0169 Imolto Imolnate = 170.0.60% 23 14.03 x 10 molecules Hol mol H₂O = 0.6692 mol H2O x 6.022*10 mukcules 1 0.0377 mol Al, (504)3 x 342.17 Imol H2O -12.00 112.1 Imal Ala (sou) =...
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...
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...
please complete the questions has not answering with clarification of the answer to any page Name...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
Question 4 of 12 > How many molecules of Nacio, are in 4.361 g of NaCIO,? Show the conversions required to solve this problem and calculate the molecules of Nacio, i mol I mol NaCIO 6.022 x 10" molecules Nacio, 4.361 g NaCIO = ? molecules Nacio 122.44 g Nacio 1 mol Nacio Answer Bank amount of Nacio, = 2.144 x1022 molecules Nacio
11.158 1020 +1.15x1020 + 3,45 x 1020) 5. 75 x 1020 4. How many times would you have to write your name to use 1.00 mol of calcium carbonate? Page 9 CES HUX mol H20 - 1.5058 mot 6.022x10² molecules 32.91 mol Naci x 58.449 18.0169 Imolto Imolnate = 170.0.60% 23 14.03 x 10 molecules Hol mol H₂O = 0.6692 mol H2O x 6.022*10 mukcules 1 0.0377 mol Al, (504)3 x 342.17 Imol H2O -12.00 112.1 Imal Ala (sou) =...
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...
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...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
POGIL-Stoichiometry How do chemists use balanced chemical equations? got bit D 23 mosquitoes? 10 He got Mol-aria Why? Chemists use balanced chemical equations as a basis to calculate how much reactant is needed or product is formed in a reaction. This is called Stoichiometry- (stoi-key-ah-meh-tree) Another way of looking at it is using the mole ratio from the balanced equation and information about one compound in the reaction to determine information about another compound in the equation. A mole ratio...
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