The Avogadro's Number and Electron Configuration
1/5
A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain? (Aluminum has a molecular mass of 27 g/mol.)
27 atoms
6.02 x 10^23 atoms
1.20 x 10^24 atoms
2/5
A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead? (The molecular mass of carbon is 12 g/mol.)
0.01 moles of carbon atoms
6 moles of carbon atoms
12 moles of carbon atoms
3/5
A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass? (The molecular mass of silicon is 28 g/mol.)
14 grams
5.6 grams
6.02 x 10^23 grams
4/5
Based on Avogadro's number, which of the following is FALSE? (For reference: the molecular mass of helium is 4 g, the molecular mass of carbon is 12 g.)
A mole is 6.02 × 1023.
One mole of helium atoms has a mass of 4 grams.
One mole of carbon atoms has a mass of 6 grams.
5/5
A piece of copper wire contains 5 moles of copper atoms. What is its mass? (The molecular mass of copper is 63.5 g/mol.)
318 grams
63.5 grams
29 grams
Use the provided material to answer questions 6-10
6/5
Which is the symbol for the element that contains six electrons in each of its neutral atoms?
Si
7/5
Which block is manganese (Mn) located in?
There is not enough information to determine this.
d-block
f-block
8/5
What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?
14
9/5
What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?
s¹, stable
p⁶, stable
p⁶, reactive
10/5
What is the correct electron configuration for an atom of sodium (Na)?
1s²2s²2p⁶3s¹
1s2s2p3s
1s22s22p663s1
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9th_Ch_2_2_The Avogadro 's Number, Electron Configuration
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Transcript
The Avogadro's Number and Electron Configuration
1/5
A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain? (Aluminum has a molecular mass of 27 g/mol.)
27 atoms
6.02 x 10^23 atoms
1.20 x 10^24 atoms
2/5
A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead? (The molecular mass of carbon is 12 g/mol.)
0.01 moles of carbon atoms
6 moles of carbon atoms
12 moles of carbon atoms
3/5
A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass? (The molecular mass of silicon is 28 g/mol.)
14 grams
5.6 grams
6.02 x 10^23 grams
4/5
Based on Avogadro's number, which of the following is FALSE? (For reference: the molecular mass of helium is 4 g, the molecular mass of carbon is 12 g.)
A mole is 6.02 × 1023.
One mole of helium atoms has a mass of 4 grams.
One mole of carbon atoms has a mass of 6 grams.
5/5
A piece of copper wire contains 5 moles of copper atoms. What is its mass? (The molecular mass of copper is 63.5 g/mol.)
318 grams
63.5 grams
29 grams
Use the provided material to answer questions 6-10
6/5
Which is the symbol for the element that contains six electrons in each of its neutral atoms?
Si
7/5
Which block is manganese (Mn) located in?
There is not enough information to determine this.
d-block
f-block
8/5
What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?
14
9/5
What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?
s¹, stable
p⁶, stable
p⁶, reactive
10/5
What is the correct electron configuration for an atom of sodium (Na)?
1s²2s²2p⁶3s¹
1s2s2p3s
1s22s22p663s1
Well done!
play again
ERROR
Try again