Good afternoon, dear students? How do you feel yourselves? Good, who is absent today?
To divide into group
Well, let's start our lesson.
Strategy «Brain storm»
1. How many liters have 1 mol of any gasses?
2. How many moles has 6.02 * 1023 particles?
3. What is the molecular weight of water?
4.The mole number is …..
5.Let us explain these...
1 mole contains 6,02.1023 atoms....
6.4 moles of sodium....
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