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Chemistry
3. Atoms and Moleculers
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Q12 of 203 Page 172

What name is given to the amount of substance containing this number of atoms?

Mole


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12

How many atoms are there in exactly 12 g of carbon -12 element? (C = 12 u)

12

What name is given to this number?

13

Calculate the mass of 12.044 × 1025 molecules of oxygen (O2).

14

What is the number of molecules in 1.5 moles of ammonia?

Questions · 203
3. Atoms and Moleculers
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