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29.The number of hydrogen stoms in 0,050 mol of CsHO A) 3,0x 10 IH atoms 1B)...
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...
49. Calculate the mass of water produced when 625 of methane, CH4, reacts with an excess...
49. Calculate the mass of water produced when 625 of methane, CH4, reacts with an excess of oxygen in the following unbalanced reaction. CH4%)+18) + CO2g)+H2Og) a. 7.02 g H20 b. 2.25 x 10² g H20 c. 14.0 g H20 d. 0.347 g H20 c. 0.78 g H20 50. In the reaction below, how many molecules of hydrogen are required to react with 9.79 g of nitrogen? 3H,@) + N2) 2NH3) 1.2.10 x 1023 molecules hydrogen b. 3.16 x 1023...
I was wondering if someone could help me with some problems on my test, my teacher...
I was wondering if someone could help me with some problems on
my test, my teacher allows me to correct them then give them back
for 1/2 credit. Along with the correct answer for each id like to
know why the answers are wrong and why the new answer is correct.
The questiins with a red mark are incorrect.
QUINN A coolant widely used in automobile engines is 38.7 % carbon, 9.7 % hydrogen, and 51.6 % oxygen. Calculate the...
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.
1. 24.8 g of oxygen contains a. 9.33 x 1023 oxygen atoms b. 50 amu c....
1. 24.8 g of oxygen contains a. 9.33 x 1023 oxygen atoms b. 50 amu c. none of these d. 1.49 x 1025 oxygen molecules e. 1.55 mol of oxygen molecules 2. 1.2 moles of oxygen atoms represent a. 0.4 g b. 0.72 x 1024 atoms c. 1.9 x 101 atoms d. 1.0 x 102 g e. none of these
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...
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)...
ENERAL CHEMISTRY 1/ will exe? Destion 4 ot yet nswered How many hydrogen atoms are there...
ENERAL CHEMISTRY 1/ will exe? Destion 4 ot yet nswered How many hydrogen atoms are there in 0.402 g of water? Molar mass: H20 = 18.02 g/mol; Avogadro No. = 6.022 x 1023 arked out of 67 Flag uestion Select one: a. 1.20 x 1022 b. 4.02 x 1022 C 2.71 x 1023 d. 1.34 x 1023 e. 2.69 x 1022
29. How many moles of Ca atoms are in 540.3 g Ca? a. 13.48 mol b....
29. How many moles of Ca atoms are in 540.3 g Ca? a. 13.48 mol b. 7.418 x 10-2 mol C. 2.166 x 104 mol d. 26.96 mol e. 540.3 mol
what is the predicted product from the following combination reaction? E) none of the above 33)...
what is the predicted product from the following combination
reaction?
E) none of the above 33) Which of the following produces the characteristic color of a fireworks display? A) atoms exploding B) molecules exploding C) electrons dropping to lower energy levels D) nuclei dropping to lower energy levels E) none of the above Chapter 8 34) How many atoms of cobalt equal a mass of 58.93 g? (Refer to the Periodic Table.) A) 1 B) 27 C) 58.93 D) 59...
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...
49. Calculate the mass of water produced when 625 of methane, CH4, reacts with an excess of oxygen in the following unbalanced reaction. CH4%)+18) + CO2g)+H2Og) a. 7.02 g H20 b. 2.25 x 10² g H20 c. 14.0 g H20 d. 0.347 g H20 c. 0.78 g H20 50. In the reaction below, how many molecules of hydrogen are required to react with 9.79 g of nitrogen? 3H,@) + N2) 2NH3) 1.2.10 x 1023 molecules hydrogen b. 3.16 x 1023...
I was wondering if someone could help me with some problems on
my test, my teacher allows me to correct them then give them back
for 1/2 credit. Along with the correct answer for each id like to
know why the answers are wrong and why the new answer is correct.
The questiins with a red mark are incorrect.
QUINN A coolant widely used in automobile engines is 38.7 % carbon, 9.7 % hydrogen, and 51.6 % oxygen. Calculate the...
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) 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)...
ENERAL CHEMISTRY 1/ will exe? Destion 4 ot yet nswered How many hydrogen atoms are there in 0.402 g of water? Molar mass: H20 = 18.02 g/mol; Avogadro No. = 6.022 x 1023 arked out of 67 Flag uestion Select one: a. 1.20 x 1022 b. 4.02 x 1022 C 2.71 x 1023 d. 1.34 x 1023 e. 2.69 x 1022
29. How many moles of Ca atoms are in 540.3 g Ca? a. 13.48 mol b. 7.418 x 10-2 mol C. 2.166 x 104 mol d. 26.96 mol e. 540.3 mol
what is the predicted product from the following combination
reaction?
E) none of the above 33) Which of the following produces the characteristic color of a fireworks display? A) atoms exploding B) molecules exploding C) electrons dropping to lower energy levels D) nuclei dropping to lower energy levels E) none of the above Chapter 8 34) How many atoms of cobalt equal a mass of 58.93 g? (Refer to the Periodic Table.) A) 1 B) 27 C) 58.93 D) 59...
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