The ability of sodium chloride to dissolve in water is an example of a (D, right?)
1 answer:
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Answer:- 12.7%
Solution:- It says, ammonium phosphate is 60.9%. It means if we assume 100 g of the sample then there is 60.9 g ammonium phosphate in it.
Formula of ammonium phosphate is and it's molecular weight is 149 grams per mol. There is only one P in the formula and so the mass of P in 149 g of ammonium phosphate is 31 g(atomic mass of P).
Now, we could use the proportions to find out the mass percentage of P in the sample.
31 g P is present in 149 g of ammonium phosphate, how many grams of P would be present in 60.9 g of ammonium phosphate. Let's set the proportions as:
This 12.7 g of phosphorous is present in 100 g of the sample means there is 12.7% phosphorous in the sample.
The correct answer is option E.
Explanation:
The pH of the solution is defined as negative logarithm of hydrogen ions concentration in a solution. Mathematically written as:
The pOH of the solution is defined as negative logarithm of hydroxide ions concentration in a solution. Mathematically written as:
The sum of ph and pOH is equal to 14.
pH + pOH = 14
A solution has a pH of 4.20.
Hence, the correct answer is option E.