교과서 질문
A Freon leak in the air-conditioning system of an old car releases 25 g of CF2Cl2 per month. What mass of chlorine does this car emit into the atmosphere each year?
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2. Atoms & Elements
Mole Concept
1:54분서술형 질문
How many moles are there in 8.50 x 10^24 molecules of sodium sulfate, Na2SO3?
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