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r-ruslan [8.4K]
3 years ago
6

Which number represents an acidic pH, 4 or 9? _______

Chemistry
2 answers:
AVprozaik [17]3 years ago
8 0
The calculation of pH is based on the activity (aH) of hydrogen ions (H+) dissolved in solution. Specifically, the pH range of numbers is based on a logarithmic scale:

pH=-log (aH)

Log functions are used to rescale very large numbers (or very small numbers) into values much closer to 1. This is often done to deal with more reasonable
Numbers (for pH, 1 to 14). Mathematically, the negative sign in the formula means that pH must be less than 1.


The lower the number on the pH scale, the greater the concentration of hydrogen ions and the greater the material's acidity. The higher the number assigned on the pH scale, the greater the concentration of hydroxide ions and the more basic, or alkaline, the material.

The answer is 4.
densk [106]3 years ago
5 0
I took a test with this question and I got 4 and it was right.
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Explanation:

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fgiga [73]
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3 years ago
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In order to predict the outcome of the reaction, write the molecular, full ionic, and net ionic equations for a mixture of aqueo
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Answer:

See explanation

Explanation:

Full molecular equation;

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Full ionic equation

2NH3(aq) + Ag^+(aq) + NO3^-(aq) --------> [Ag(NH3)2]^+(aq) + NO3^-(aq)

Net ionic equation;

2NH3(aq) + Ag^+(aq) -------->  [Ag(NH3)2]^+(aq)

When Silver nitrate is mixed with a solution of aqueous ammonia, a white and cloudy solution was observed.

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The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Tomtit [17]

The density of Ca will be between that of Mg and Sr

Explanation:

Ca, Mg and Sr are group II elements. They are called alkali earth metals. The correct order of the elements in this group are: Be, Mg, Ca, Sr, Ba and Ra.

Density is an intensive property of matter which describes the amount of matter(mass) per volume of a substance.

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Learn more:

density brainly.com/question/2658982

mass number brainly.com/question/2597088

#learnwithBrainly

                   

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