There are 2 significant figures
Ph measures how acidic or basic something is. The lower the number the more acidic it is going to be.
Drink A is basic, he can drink that
Drink B is neutral, he can drink that
Drink C is acidic, he should avoid
Drink D is basic, he can drink that
Drink E is acidic, he should avoid
Explanation:
Given a food with a relative humidity of 81%, what is the water activity of that food?
The water activity of a food can be determined by using the formula:
water activity=relative humidity of food / 100

They are described through the use of four physical properties or macroscopic characteristics: pressure, volume, number of particles (chemists group them by moles) and temperature.
Answer: Neutrons vary from each other in their element
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