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alekssr [168]
3 years ago
15

Is it possible to tell if an acid or base is strong or weak just by looking at its chemical formula?

Chemistry
1 answer:
Gre4nikov [31]3 years ago
8 0
It is.

An acid will be strong when its conjugated base is highly stable, and vice-versa.

That can occur for instance through electronic delocalization.
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Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100 cm3. What is the concentration of nitrate io
Soloha48 [4]

Answer : The correct option is, (b) 22.5 M

Explanation : Given,

Mass of calcium nitrate tetrahydrate = 266 g

Molar mass of calcium nitrate tetrahydrate  = 236.15 g/mole

Volume of solution = 100cm^3=100mL

Molarity : It is defined as the moles of solute present in one liter of solution.

Formula used :

Molarity=\frac{\text{Mass of calcium nitrate tetrahydrate }\times 1000}{\text{Molar mass of calcium nitrate tetrahydrate }\times \text{volume of solution in ml}}

Now put all the given values in this formula, we get:

Molarity=\frac{266g\times 1000}{236.15g/mole\times 100ml}=11.26mole/L=11.26M

As calcium nitrate tetrahydrate dissociate to give 1 mole of calcium ion, 2 moles of nitrate ion and 4 moles of water.

The concentration of nitrate ion = 2\times 11.26M=22.5M

Thus, the concentration of nitrate ion is, 22.5 M

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3 years ago
3. What is the substance ozone?
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Chlorofluorocarbons and other halogenated ozone depleting substances are mainly responsible for man made chemical ozone depletion.
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3 years ago
What causes surface tension under water
RSB [31]
Surface tension under water results from greater attraction of liquid molecules to each other, due to a process called cohesion, than to molecules in the air, due to a process called adhesion.

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Micronutrients can be classified based on the presence of ______ in their chemical structures. According to this classification
natali 33 [55]

Answer:

Carbon

Explanation:

Micronutrients include elements or groups needed by the body in order to survive. These elements or groups include vitamins and minerals.  Micronutrients can be divided into four categories:

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2. Fat-soluble vitamins

3. Macrominerals

4. Trace minerals

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2 years ago
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A solution labeled "0.105 M NaOH" would contain ______________ moles of NaOH in each liter of solution.
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