No experiment with three desiccators, each containing a different solution, three types of food were added and left for 14 days. The activity of wa...

Question

No experiment with three desiccators, each containing a different solution, three types of food were added and left for 14 days. The activity of water was measured in each food sample. In the presence of sulfuric acid, there was no change in the activity of water in the coffee and toast samples. What can be concluded from this?

a) The coffee and toast have high water activity.
b) The coffee and toast have low water activity.
c) The coffee and toast have intermediate water activity.
d) It is not possible to determine the water activity of the coffee and toast.

Ed · Answer

A partir do experimento descrito, pode-se concluir que a alternativa correta é a letra B) O café e a torrada têm baixa atividade de água. Isso porque, na presença de ácido sulfúrico, não houve mudança na atividade de água nas amostras de café e torrada, o que indica que a atividade de água desses alimentos é baixa.

No experiment with three desiccators, each containing a different solution, three types of food were added and left for 14 days. The activity of wa...

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