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Common salt obtained from sea-water cont...

Common salt obtained from sea-water contains `8.775% Na Cl` by mass. The number of formula units of `NaCl` present in `25 g` of this salt is :

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Common salt is obtained from sea water by the process of....... .

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A solution contains 40 g of NaCl in 320g of water. Calculate its concentration in terms of mass percentage of solution

Read the given passage and answers following questions : The cleansing action of soap is due to emulsification and micelle formation. Soaps are basically sodium and potassium salts of long chain fatty acids, R-COO- Na^(+) . The end of the molecule to which the sodium is attached is polar in nature, while the alkyl-end is non-polar. Thus, a soap molecule contains a hydrophilic (polar) and a hydrophobic (nonpolar) part. When soap is added to water containing dirt, the soap molecules surround the dirt particles in such a manner that their hydrophobic parts get attached to the dirt molecule and the hydrophilic parts point away from the dirt molecule. This is known as micelle formation. Thus, we can say that the polar group dissolves in water while the non-polar group dissolves in the dirt particle. Now, as these micelles are negatively charged, they do not coalesce and a stable emulsion is formed. Define soaps ?

Read the given passage and answers following questions : The cleansing action of soap is due to emulsification and micelle formation. Soaps are basically sodium and potassium salts of long chain fatty acids, R-COO- Na^(+) . The end of the molecule to which the sodium is attached is polar in nature, while the alkyl-end is non-polar. Thus, a soap molecule contains a hydrophilic (polar) and a hydrophobic (nonpolar) part. When soap is added to water containing dirt, the soap molecules surround the dirt particles in such a manner that their hydrophobic parts get attached to the dirt molecule and the hydrophilic parts point away from the dirt molecule. This is known as micelle formation. Thus, we can say that the polar group dissolves in water while the non-polar group dissolves in the dirt particle. Now, as these micelles are negatively charged, they do not coalesce and a stable emulsion is formed. How many parts of soaps exist ?

Read the given passage and answers following questions : The cleansing action of soap is due to emulsification and micelle formation. Soaps are basically sodium and potassium salts of long chain fatty acids, R-COO- Na^(+) . The end of the molecule to which the sodium is attached is polar in nature, while the alkyl-end is non-polar. Thus, a soap molecule contains a hydrophilic (polar) and a hydrophobic (nonpolar) part. When soap is added to water containing dirt, the soap molecules surround the dirt particles in such a manner that their hydrophobic parts get attached to the dirt molecule and the hydrophilic parts point away from the dirt molecule. This is known as micelle formation. Thus, we can say that the polar group dissolves in water while the non-polar group dissolves in the dirt particle. Now, as these micelles are negatively charged, they do not coalesce and a stable emulsion is formed. What is micelle formation?

NARENDRA AWASTHI-STOICHIOMETRY-Level 3 - Subjective Problems
  1. Common salt obtained from sea-water contains 8.775% Na Cl by mass. The...

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  2. What volume of a liquid (in L) will contain 10 mole ? If molar mass of...

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  3. 16 g of SO(x) gas occupies 5.6 L at 1 atm and 273 K.What will be the v...

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  4. 200 mL of 1 HCl, is mixed with 300 mL of 6 M and the final solution i...

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  5. N(2)(g) reacts with H(2)(g) in either of the following ways depending ...

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  6. Phospheric acid (H(3)PO(4)) perpared in two step process . ...

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  7. W is the mass of iron (in g) which will be converted into Fe(3)O(4) by...

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  8. Calculate the total moles of atoms of each element present in 122.5 g ...

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  9. On dissolving 2.0 g of metal in sulphuric acid ,4.51 g of the metal su...

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  10. One gram of a metallic chloride was found to contain 0.835 g of chlori...

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  11. Calculate number of gram atoms in 103g of KOH.

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  12. The emperical formula of the sucrose is:

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  13. The number of atoms of He in 104 amu is:

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  14. When BrO(3)^(-) ion reacts with Br^(-) ion in acidic medium, Br(2) is ...

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  15. A volume of 12.5 mL of 0.05 M SeO(2) reacts with 25 mL of 0.1 M CrSO(4...

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  16. A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titr...

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  17. A sample of 28 mL of H(2) O(2) (aq) solution required 10 mL of 0.1 M K...

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  18. For the redox reaction given, what is the value of (x)/(z) ? xNO(3)^...

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  19. On heating 0.220 g of a metallic oxide in presence of hydrogen,0.045 g...

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  20. 10 g mixture of K(2)Cr(2)O(7) and KMnO(4) was treated with excess of K...

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  21. In an ore, the only oxidizable material is Sn^(2+). This ore is titrat...

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