Identify all correct statements pertaining to number of particles and moles. A. 6.023 x 1023 atoms...
Identify all correct statements pertaining to number of particles and moles.
| A. |
6.023 x 1023 atoms of N is equal to 1 mol N2. |
|
| B. |
There are 2.84 x 1023 H atoms in 0.236 mol H2O. |
|
| C. |
There are 3 O atoms in 1 mol Al2O3. |
|
| D. |
0.150 mol N2O3 has the same number of nitrogen atoms as 0.300 mol of NO. |
Homework Answers
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Identify all correct statements pertaining to number of
particles and moles.
A.
6.023 x 1023 atoms...
6. Find the number of moles of each of the following. a. 6.023 x 1023 atoms...
6. Find the number of moles of each of the following. a. 6.023 x 1023 atoms of Polonium b. 4.7g of sulfur c. 23.2 g of Aluminum 7. What is the mass of each of the following elements? a. 2.33 mol of Pb b. 0.266 mol of Na c. 0.99 mol of an element with a molar mass of 123 g/mol 8. How many moles of Ag are produced in the decomposition of 1.00kg of silver () oxide? 9. In...
Determine the number of moles of Al2O3 that contain 7.63 x 1023 O atoms.
Determine the number of moles of Al2O3 that contain 7.63 x 1023 O atoms.
Calculate the number of moles equivalent to 5.4 x 1023 atoms of helium. Note: Be sure...
Calculate the number of moles equivalent to 5.4 x 1023 atoms of helium. Note: Be sure to use the correct number of significant figures. 0 Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimaleg 2.55 for 2.5 x 107 Numeric Answer:
Determine the number of moles of OF2 that contain 4.51 x 1023 O atoms.
Determine the number of moles of OF2 that contain 4.51 x 1023 O atoms.
Isotope 2. Which of the following statements about isotopes is/are correct? (a) "Br and 8'Br have...
Isotope 2. Which of the following statements about isotopes is/are correct? (a) "Br and 8'Br have the same number of neutrons. (b) 'N and "SN have the same number of protons. (c) "O has the same number of neutrons and protons. (d) Answers (a) and (b) (e) Answers (a), (b) and (c) 3. How many nitrogen atoms are present in 0.250 mol of hydrazine (N2H4)? (a) 1.51 x 1022 nitrogen atoms (b) 3.01 x 1022 nitrogen atoms (c) 7.53 x...
• Which statements are correct for the reaction 2 HS + SO, →3 S + H2O...
• Which statements are correct for the reaction 2 HS + SO, →3 S + H2O a) 3 mol S is produced per mole H S consumed. b) 3 g S is produced for every gram SO, consumed. 1 mol H2O is produced per mol of H,S consumed d) Two-thirds of the S produced comes from HS e) The number of moles of products formed equals the number of moles of reactants consumed. The number of moles of atoms present...
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...
1) 1) To convert a given number of moles into the number of atoms, one would...
1) 1) 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 2) Consider the following precipitation reaction. Which of the following correctly identifies the spectator ions in this reaction? Na2S(aq) + CuSO4(aq) → Na2SO4(aq) + CuS(s) A) Na+ and SO42- B)...
1. How many moles are present in 1.51 x 1023 molecules of HCl? A. 9.12 mol...
1. How many moles are present in 1.51 x 1023 molecules of HCl? A. 9.12 mol B. 0.251 mol C. 3.99 mol D. 146 mol 2. Ions can be formed from atoms by losing or gaining electrons. Select the alternative that states the correct number of protons, neutrons, and electrons in Cu2+ with mass number 63. A. 29 protons, 34 neutrons, 31 electrons B. 29 protons, 34 neutrons, 27 electrons C. 27 protons, 29 neutrons, 29 electrons D. 29 protons,...
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...
6. Find the number of moles of each of the following. a. 6.023 x 1023 atoms of Polonium b. 4.7g of sulfur c. 23.2 g of Aluminum 7. What is the mass of each of the following elements? a. 2.33 mol of Pb b. 0.266 mol of Na c. 0.99 mol of an element with a molar mass of 123 g/mol 8. How many moles of Ag are produced in the decomposition of 1.00kg of silver () oxide? 9. In...
Calculate the number of moles equivalent to 5.4 x 1023 atoms of helium. Note: Be sure to use the correct number of significant figures. 0 Respond with the correct number of significant figures in scientific notation (Use Enotation and only 1 digit before decimaleg 2.55 for 2.5 x 107 Numeric Answer:
Isotope 2. Which of the following statements about isotopes is/are correct? (a) "Br and 8'Br have the same number of neutrons. (b) 'N and "SN have the same number of protons. (c) "O has the same number of neutrons and protons. (d) Answers (a) and (b) (e) Answers (a), (b) and (c) 3. How many nitrogen atoms are present in 0.250 mol of hydrazine (N2H4)? (a) 1.51 x 1022 nitrogen atoms (b) 3.01 x 1022 nitrogen atoms (c) 7.53 x...
• Which statements are correct for the reaction 2 HS + SO, →3 S + H2O a) 3 mol S is produced per mole H S consumed. b) 3 g S is produced for every gram SO, consumed. 1 mol H2O is produced per mol of H,S consumed d) Two-thirds of the S produced comes from HS e) The number of moles of products formed equals the number of moles of reactants consumed. The number of moles of atoms present...
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...
1) 1) 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 2) Consider the following precipitation reaction. Which of the following correctly identifies the spectator ions in this reaction? Na2S(aq) + CuSO4(aq) → Na2SO4(aq) + CuS(s) A) Na+ and SO42- B)...
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...
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