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Exercício de ppm e ppb
Exercício:
9-)Em um aquário constatou – se a presença de 0,8 g de CO2 para cada 80 Kg de ar.Calcule a concentração em ppm e em ppb.
10-) Em um aquário constatou-se a presença de o,5 g de CO2 para cada 50 Kg de ar.Calcule a concentração em ppm e ppb.
11-) Um purgante apresenta 2% em massa de fenolftaleína.Considerando que um comprimido apresente 10 Mg, calcule a massa de fenolftaleína neste comprimido.
12-) Um frasco de soro fisiológico apresenta 3,5 % de sal de cozinha para preparar um litro de soro qual massa foi utilizada? Considere a densidade do soro igual á da água
13-) Em estações de tratamento, a água potável deve apresentar nó máximo 0,09% de sais dissolvidos;Transforme esse valor em:
a-)ppm
b-)ppb4
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