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Leno4ka [110]
3 years ago
9

Which is a cationic detergent having four organic groups attached to a nitrogen atom and used to sanitize utensils? Select one:

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
8 0

Answer:B

Explanation:

A quaternary ammonium compound contains a nitrogen atom to which four atoms or groups are attached leaving a positive charge on the nitrogen. This compound is now cationic in nature and can be used as a cationic detergent.

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Which element had the longest effect on human history?
Dovator [93]
Oxygen I guess :)))       

6 0
3 years ago
What is the freezing point of a solution of 0.5 mol of LiBr in 500 mL of water? (Kf = 1.86°C/m) –1.86°C –7.44°C –5.58°C –3.72°C
tresset_1 [31]

Answer:

  • Last choice: <em><u>- 3.72°C</u></em>

Explanation:

The freezing point depression in a solvent is a colligative property: it depends on the number of solute particles.

The equation to predict the freezing point depression in a solvent is:

  • ΔTf = Kf × m × i

Where,

  • ΔTf is the freezing point depression of the solvent,
  • m is the molality,
  • Kf is the cryoscopic molal constant of the solvent, and i is the Van'f Hoff factor, which is the number of ions produced by each unit formula of the ionic compound.

The calcualtions are in the attached pdf file. Please, open it by clicking on the image of the file.

Download pdf
6 0
3 years ago
When 0.49 g of a molecular compound was dissolved in 20.00 g of cyclohexane, the freezing point of the solution was lowered by 3
IRISSAK [1]

Answer: The molecular mass of this compound is 131 g/mol

Explanation:

Depression in freezing point:

\Delta T_f=i\times k_f\times \frac{w_2\times 1000}{M_2\times w_1}

where,

\Delta T_f = depression in freezing point  = 3.9^oC

k_f = freezing point constant  = 20.8^0C/m

m = molality

i = Van't Hoff factor = 1 (for non-electrolyte)

w_2 = mass of solute = 0.49 g

w_1 = mass of solvent (cyclohexane) = 20.00 g

M_2 = molar mass of solute = ?

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

(3.9)^oC=1\times (20.8^oC/m)\times \frac{(0.49g)\times 1000}{M_2\times (20.00g)}

M_2=131g/mol

Therefore, the molar mass of solute is 131 g/mol

7 0
3 years ago
What are some synonyms for dissolved
Luba_88 [7]
*Go into solution
*Break down
*Liquefy
*Disintegrate
*Melt away
*Evaporate
*Dissapear

Hope it helps! Brainliest answer, PLZ? :)
4 0
4 years ago
Power plants release sulfur dioxide and nitrogen oxides into the atmosphere where they combine with water vapor to form _____.
Ad libitum [116K]

<em>Answer:</em>

  • The correct option is acid precipitation

<em>Explanation:</em>

  • When sulfur dioxide react with water vapors, they form sulphuric acid.
  • Similarly, when NOx reacts with water vapors to form HNO2 and HNO3.
  • So these acid cause the rain water into acidic rain.

4 0
3 years ago
Read 2 more answers
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