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Topic 5b- Moles (paper 1 +2)
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卡片总数: 4 张•内容版本: v4•公开卡包•更新时间: 8/1/2026
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#1
正面 (问题)
What is 1 mole equal to?
背面 (解答)
6.02 x 10²³
#2
正面 (问题)
How does relative atomic mass relate to the number of moles in a substance?
背面 (解答)
The relative atomic mass number is equal to how many grams of a substance contains one mole. e.g. Na’s atomic mass = 23 Therefore: 23 grams of Na = 1 mole (6.02 x 10²³) of Na atoms
#3
正面 (问题)
What is the formula for moles of atoms?
背面 (解答)
moles of atoms = mass / relative atomic mass (relative atomic mass in grams) n = m/ Ar
#4
正面 (问题)
What is the molecular mass of a compound?
背面 (解答)
The sum of all the masses of all the atoms in a formula- e.g. CaCO₃ RFM = 40 + 12 + (3 x 16)