Mole, avogadro's number and laws of chemical combinations
Authored by Arantxa Cepeda
Chemistry
8th - 12th Grade
NGSS covered
Used 39+ times
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21 questions
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1.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
How many atoms are there in one mole of carbon?
Avogador's number
28000
6.022x10^23
A lot
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mass of one mole of carbon atoms?
20 g/mol
16 g/mol
4 g/mol
12 g/mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mass of one mole of carbon dioxide (CO2)?
C = 12g/mol
O = 16g/mol
44 g/mol
50 g/mol
31 g/mol
16 g/mol
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many moles of sodium are there in 250 grams of sodium?
Remember Number of moles = mass / atomic mass
10.86 moles
10.86 atoms
65.45x10^23 atoms
6.45 atoms
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many atoms are there in 5.0 grams of gold?
(same formula as before)
0.25 atoms
0.1528x10^23 atoms
0.025 atoms
none of the above
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mass of one mole of water (H2O)?
18 g/mol
16 g/mol
1 g/mol
6.022x10^23 atoms
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The molar mass of CO2 is 44.01 g. Therefore, one mole of carbon dioxide has
a mass of _____ , and 0.500 mole has a mass of _____ .
40 g and 12.2 g
44.01 g and 22.0 g
12 g/mol
16 g/mol
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