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Nitella [24]
3 years ago
11

Cho một thực phẩm có độ ẩm tương đối là 81%, hỏi hoạt độ của nước trong thực phẩm đó là

Chemistry
1 answer:
morpeh [17]3 years ago
8 0

Given question is:

Given a food with a relative humidity of 81%, what is the water activity in that food?

Explanation:

Water activity in food can be determined by using the below-shown formula:

water activity=\frac{equilibrium relative humidity}{100}

Equilibrium is established between the vapor pressure of food and the surrounding air media.

Thus, for the given food the relative humidity is 81%.

hence, its water activity is

81/100\\=0.81

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