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Rainbow [258]
3 years ago
12

Which will provide the most direct measure of pH by measuring the hydrogen ion concentration of a solution?

Chemistry
2 answers:
pochemuha3 years ago
6 0

Answer : The correct option is, pH meter

Explanation :

pH meter : It is a type of instrument which measures the activity of hydrogen ion in water based solution. Or we can say that it will provide the most direct measure of pH by measuring the hydrogen ion concentration of a solution.

Litmus paper : It is a type of paper which changes the color based on whether the solution is an acid or a base.

Phenolphthalein : It is an indicator which changes the color based on pH values.

Bromthymol blue : It does not tell the concentrations, it is a pH indicator for the weak acids and bases.

Hence, the pH meter provide the most direct measure of pH by measuring the hydrogen ion concentration of a solution.

pogonyaev3 years ago
5 0
PH meter is dircet so the answer is C

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How many moles of Ammonium Sulfate can be made from 30.0mol of NH3? 2NH3 + H2SO4 --> (NH4)2SO4
BartSMP [9]

Answer: 15.0 moles of (NH_4)_2SO_4 are formed from  30.0 mol of NH_3

Explanation:

The balanced chemical reaction is :

2NH_3+H_2SO_4\rightarrow (NH_4)_2SO_4

According to stoichiometry :

2 moles of NH_3 give = 1 mole of (NH_4)_2SO_4

Thus 30.0 moles of NH_3 will give =\frac{1}{2}\times 30.0=15.0moles  of (NH_4)_2SO_4

Thus 15.0 moles of (NH_4)_2SO_4 are formed from  30.0 mol of NH_3

7 0
3 years ago
Why is it so important in an ideal simple experiment to change only one variable from trial to trial?
RideAnS [48]
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3 0
3 years ago
Calculate the concentration imports per million ppm of DDT if a sample size of 5000 g contained 0.10 g DDT
nevsk [136]

Answer:

20ppm

Explanation:

parts per million are defined as the mass of solute in mg (In this case, mass of DDT) per kg of sample.

To solve this question we must find the mass of DDT in mg and the mass of sample in kg:

<em>Mass DDT:</em>

0.10g * (1000mg / 1g) = 100mg

<em>Mass sample:</em>

5000g * (1kg / 1000g) = 5kg

Parts per Million:

100mg / 5kg =

<h3>20ppm</h3>
3 0
3 years ago
1. Water vapor has_________ energy because it is a __________.
natulia [17]
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4 0
3 years ago
Calculate the oxidation numbers of the elements in this equation<br> 2 Al2O3 → 4 Al + 3 O2
riadik2000 [5.3K]

Explanation:

Answer

Open in answr app

The rule used here is that the algebraic sum of the oxidation numbers of all the atoms a molecule is zero.

Al2O32× ( oxidation number of Al)+3× ( Oxidation number of O )  = 0

2× ( Oxidation number of Al) +3(−2)=0

2× ( oxidation number of Al) +6

∴ Oxidation number of Al =+3

5 0
3 years ago
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