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Oplossen en verdunnen

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show 5x5000:50=500 ml  
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show 5x200:10=100ml  
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Je hebt een glucose oplossing van 10%. Je moet 200ml maken van een oplossing 5%. Hoeveel ml water moet er worden toegevoegd   show
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show 0,9x10= 9mg/ml ( 1%= 10mg/ml) 9x100= 900 mg = 0,9 gram  
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Je moet 100 mL glucose-oplossing 2,5% maken. Hoeveel gram glucose heb je nodig?   show
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show 5 x 10 =50mg/ml ( 1%=10mg/ml) 1dl=100ml 50x100=5000mg = 5 gr  
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Je hebt 10 liter Halamidoplossing 0,1% Hoeveel g Halamid zit hierin?   show
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show 250:100=1,25 = 1% 1,25 : 2,5 =0,5 %  
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show 3x30:100= 0,9 ml 30-0,9 = 29,1 ml  
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In een zoutoplossing van 10% zit 20 g zout. Hoeveel mL oplossing is dit?   show
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Created by: Joyce Dekker
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