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CHEM0302010
One mole of a substance is defined as the quantity of a substance that contains the same number of particles in 12.000g of _____________.
CHEM0302020
Which contains more atoms, 1 mol of helium or 1 mol of uranium?
[ RAM: He=4; U=238 ]
CHEM0302030
Which of the followings are true about the substance in the diagram above?
CHEM0302040
Find the number of atoms in 0.3 mol of copper metal.
[Avogadro constant = 6.02 x 10²³]
CHEM0302050
How many moles of magnesium that contain 2.408 x 10²³ of magnesium atom? [Avogadro number = 6.02 x 10²³]
CHEM0302060
Calculate the number of atoms in 0.5 mol of ammonia molecules. [Avogadro number = 6.02 x 10²³]
CHEM0302070
Which of the following is correct about the Avogadro constant?