(a) at the bottom - high density organic compound dissolved in methylene chloride
(b) at the bottom - saturated aqueous sodium chloride
Explanation:
Sodium chloride is dissolved in water while the organic compounds are dissolved in methylene chloride. After mixing the two solutions two layers will form because water (polar molecule) will not mix with the methylene chloride (nonpolar molecule).
The layer with higher density will be at the bottom.
(a) saturated aqueous sodium chloride (d = 1.2 g/mL) - upper layer
high density organic compound dissolved in methylene chloride (d = 1.4 g/mL) - bottom layer
(b) saturated aqueous sodium chloride (d = 1.2 g/mL) - bottom layer
low density organic compound dissolved in methylene chloride (d = 1.1 g/mL) - upper layer
Learn more about:
liquids with different densities
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3 Common States of Matter:
1. Solid - particles are motionless and stick together very closely.
2. Liquid - particles are moving slowly without pattern.
3. Gas - Particles are moving rapidly again without pattern.
The empirical formula of this compound is ![Fe_2O_3](https://tex.z-dn.net/?f=Fe_2O_3)
<h3>Empirical formula </h3>
To calculate the empirical formula of a compound, the value of moles of each element is needed.
As we have the information of the mass value, we will use the molar mass expression, which corresponds to:
![MM_O = 16g/mol\\MM_Fe = 55.8g/mol](https://tex.z-dn.net/?f=MM_O%20%3D%2016g%2Fmol%5C%5CMM_Fe%20%3D%2055.8g%2Fmol)
![MM = \frac{m}{mol}](https://tex.z-dn.net/?f=MM%20%3D%20%5Cfrac%7Bm%7D%7Bmol%7D)
![16 = \frac{4.8}{x}](https://tex.z-dn.net/?f=16%20%3D%20%5Cfrac%7B4.8%7D%7Bx%7D)
![x = 0.3mol](https://tex.z-dn.net/?f=x%20%3D%200.3mol)
![55.8=\frac{11.2}{x}\\x = 0.2](https://tex.z-dn.net/?f=55.8%3D%5Cfrac%7B11.2%7D%7Bx%7D%5C%5Cx%20%3D%200.2)
As the value of the empirical formula must be an integer, simply multiply the two values by a common factor:
![O = 0.3 \times 10 = 3\\Fe = 0.2 \times 10 = 2](https://tex.z-dn.net/?f=O%20%3D%200.3%20%5Ctimes%2010%20%3D%203%5C%5CFe%20%3D%200.2%20%5Ctimes%2010%20%3D%202)
![Fe_2O_3](https://tex.z-dn.net/?f=Fe_2O_3)
So, the empirical formula of this compound is
.
Learn more about empirical formula: brainly.com/question/1247523
1,2-methylcyclohexane, 1,3-methylcyclohexane, 1,4-methylcyclohexane
Answer:
3.064 $
Solution:
First of all we will find the number of pounds contained by one Kg. Therefore, it is found that,
1 Kilogram = 2.20462 Pounds
Hence, as given,
1 Pound of Margarine costs = 1.39 Dollars
So,
2.20462 Pounds Margarine will cost = X Dollars
Solving for X,
X = (2.20462 Pounds × 1.39 Dollars) ÷ 1 Pound
X = 3.064 Dollars