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WorksheetsChemistry - Moles
Total questions: 21
Worksheet time: 34mins
How many atoms are in 12 grams of carbon-12?
6.022 x 1023 atoms
3.022 x 1026 atoms
2.602 x 1032 atoms
6.202 x 1020 atoms
The number 6.022 x 1023 is known as ___
Avocado's constant
Avogadro's number
Dalton's digit
the Lavoisier numeral
One mole of oxygen atoms contains 6.022 x 1023 atoms, and it weighs ___
12 amu
16 amu
12 grams
16 grams
One mole of hydrogen weighs 1.008 g, a mole of iron weighs ___
12.01 g
16.00 g
26 g
55.85 g
The mass, in grams, of one mole of a substance is known as its ___
atomic mass unit
molar mass
relative atomic mass
stoichiometric weight
What is the relative molecular mass of ammonium sulfate, (NH4)2SO4?
(a)
What is the relative molecular mass of H2O?
(a)
Calculate the number of atoms in 0.0340 g Zn.
5.20 x 10-4 atoms Zn
3.13 x 1023 atoms Zn
3.13 x 1020 atoms Zn
2.05 x 1022 atoms Zn
What is the mass of one mole of aluminum (Al)?
27 g
13 g
54 g
14 g
Which of these elements has the highest molar mass?
Hydrogen
Iron
Carbonate
Cobalt
