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aksik [14]
2 years ago
12

Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid?

Chemistry
1 answer:
Viefleur [7K]2 years ago
7 0

Your answer would be C, 4.8%.

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Taya2010 [7]

Answer:

C

Explanation:

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3 0
3 years ago
The energy released by combustion of 1 g of a substance is called the ________ of the substance. the energy released by combusti
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Enthalpy of the substance
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Which thing has the greatest
aksik [14]

Answer:

either a car or a rock

Explanation:

because the rock can weigh more than the car , and vice-versa with the car weighing more than the rock

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Calcium metal is obtained by direct electrolysis of molten cacl2. if a metallurgical electrolysis apparatus operates at 28.70 a,
ser-zykov [4K]
There is 1 mole of electrons = 96500C and Ca = 40 
Ca2+  + 2e --->Ca
Base on the formula above it means that there are 2 moles of electrons to produce 1 mole of calcium.

96500C x 2 = 193000C

193000C electricity produce 40g Calcium

Coulombs = Amps x seconds   (28.70A for 12 hours)
= 28.70A x 12 x 60 x 60 C
= 1 239 840 C

This amount of electricity will produce 

=1239840 / 193000 x 40g Calcium
= 6.42 x 40 g Calcium
= 256.96 g

So there will be 256.96g of Calcium metal that will be produced in 12 hours. 
6 0
3 years ago
According to the chemical reac- tion, if there are 4.5 mol of oxy- genated hemoglobin present in an excess of carbon monoxide, h
Deffense [45]
A single molecule of hemoglobin can bind to 4 molecules of oxygen gas. However, hemoglobin has a greater affinity for carbon monoxide than oxygen. Therefore, an excess of carbon monoxide in the presence of oxygenated hemoglobin will result in the displacement of each oxygen atom for a carbon monoxide atom.

Hb(O2)4 (aq) + 4 CO(g) --> Hb(CO)4 (aq) + 4 O2(g)

With an excess of carbon monoxide, it is safe to assume that each oxygen molecule will be displaced with a carbon monoxide molecule. Therefore, if we have 4.5 moles of oxygenated hemoglobin (Hb(O2)4), all 4.5 moles of the species will release oxygen and bind to carbon monoxide. 
7 0
3 years ago
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