1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tom [10]
3 years ago
5

Saturated aqueous sodium chloride(d=1.2g/mL) is added to the following mixtures in order to dry the organic layer. Which layer i

s likely to be on the bottom in each case?a) Sodium chloride layer or layer containing a high density organic compound dissolved in methylene chloride(d=1.4g/mL).b) Sodium chloride layer or a layer containing a low density organic compound dissolved in methylene chloride(d=1.1g/mL)
Chemistry
1 answer:
natali 33 [55]3 years ago
7 0

(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

brainly.com/question/5396235

brainly.com/question/9490207

#learnwithBrainly

You might be interested in
Vitamin c is known chemically by the name ascorbic acid determine the empirical formula of ascorbic acid if it is composed of 40
kow [346]

Answer:

=C_3H_4O_3

Explanation:

When percentage composition is given, and asked for the empirical formula, it is simplest to  assume 100 g of material. Thus,

Mass C = 40.92 g.  Moles C = 40.92 g x 1 mole/12 g = 3.41 moles C

Mass H = 4.58 g.  Moles H = 4.58 g x 1 mole/1.0 g = 4.58 moles H

Mass O = 54.50 g.  Moles O = 54.50 g x 1 mole/16 g = 3.41 moles O

Now, we want to get the moles into whole numbers, so we begin by dividing all by the smallest, i.e. divide all values by 3.41.

Moles C = 3.41/3.41 = 1

Moles H = 4.58/3.41 = 1.34

Moles O = 3.41/3.41 = 1

Now, in order to get 1.34 to be a whole number we multiply it (and all others) by 3

Moles C = 1x3 = 3

Moles H = 1.34x3 = 4

Moles O = 1x3 = 3

Empirical Formula =C_3H_4O_3

3 0
3 years ago
A sample contains 25% parent isotope and 75% daughter isotopes. If the half-life of the parent isotope is 72 years, how old is t
alisha [4.7K]

The radioactive decay obeys first order kinetics

the rate law expression for radioactive decay is

ln\frac{[A_{0}]}{[A_{t}]}=kt

Where

A0 = initial concentration

At = concentration after time "t"

t = time

k = rate constant

For first order reaction the relation between rate constant and half life is:

k=\frac{0.693}{t_{\frac{1}{2} } }

Let us calculate k

k = 0.693 / 72 = 0.009625 years⁻¹

Given

At = 0.25 A0

ln(\frac{A0}{0.25A0})=0.009625  X time

time = 144 years

So after 144 years the sample contains 25% parent isotope and 75% daughter isotopes**

Simply two half lives

5 0
3 years ago
Read 2 more answers
How should you add metal to the graduated cylinder so that it will not crack the glass at the bottom?
ella [17]

Answer:

you tilt the cylinder at a slight angle so that the metal slides down the sides, rather than drops all it`s weight to the bottom

5 0
3 years ago
How is chemical and physical properties of matter like in different
Tasya [4]
Chemical properties is when a material undergoes a chemical change or reaction like a nail rusting and a physical change can be observed without changing the material like temperature, color, texture, odor,etc.
4 0
3 years ago
Difference between giant ionic structure,giant covalent structure and simple molecular structure and also covalent bonds and ion
Alex_Xolod [135]
Simple molecular biology
8 0
3 years ago
Other questions:
  • 8. Calculate the molar mass of an alkane with the mole-<br>cular formula C H18.​
    11·2 answers
  • A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. the sterilization tank contains
    15·1 answer
  • Suppose you are investigating how the amount of exercise a hamster gets affects how long the hamster lives. In order to control
    15·2 answers
  • A 59.1 sample of aluminum is put into a calorimeter (see sketch at right) that contains of water. The aluminum sample starts off
    11·1 answer
  • What is the organism that kills and eats other organisms for food called?
    15·2 answers
  • 13 Consider this neutralization reaction.
    14·2 answers
  • Scientists have developed a new drug known to cure a previously incurable disease. What best explains if the new drug is a compo
    12·1 answer
  • How many moles of NaOH are in a 50.0 g sample of NaOH?
    7·2 answers
  • In the coal-gasification process, carbon monoxide is converted to carbon dioxide via the following reaction: CO (g) H2O (g) CO2
    6·1 answer
  • An 8-year-old child fell to the ground from an 8-foot-high playground structure. He is lying on his back and moving very little.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!