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
Gnesinka [82]
3 years ago
5

Recrystallization Step: The procedure asks for using equal amount by mass of the crude product and the recrystallization solvent

, 95% ethanol. Suppose you use 1.2g of product, how many mL of 95% ethanol would you add? Write the answer as a number (without units) with 3 significant figures (e.g. 2.15). Density of 95% ethanol = 0.86 g/mL
Chemistry
1 answer:
zubka84 [21]3 years ago
4 0

Answer : The volume (in mL) of 95% ethanol added would be, 1.39

Explanation :

As we are given that:

Mass of 95 % ethanol = 1.2 g

Density of 95 % ethanol = 0.86 g/mL

Formula used :

\text{Volume of ethanol}=\frac{\text{Mass of ethanol}}{\text{Density of ethanol}}

\text{Volume of ethanol}=\frac{1.2g}{0.86g/mL}

\text{Volume of ethanol}=1.39mL

Therefore, the volume (in mL) of 95% ethanol added would be, 1.39

You might be interested in
Suppose you had 2.0158 grams of (H2) how many moles of hydrogen do u have ?
ale4655 [162]
\hbox { You have to calculate the Molecular Mass for H2:}

M_{H2} = 2A _{H2} = 2*1=2 \hbox { grames/mole}

\hbox { So, in 2,0158 grames of H you will have 1 mole...}
7 0
3 years ago
What is the difference between an imprint and an impression?
liubo4ka [24]

Answer:

As nouns the difference between impression and imprint

is that impression is the indentation or depression made by the pressure of one object on or into another while imprint is an impression; the mark left behind by printing something.

5 0
3 years ago
In an acid/base lab, a student used blue litmus paper and placed it in the sample. It stayed blue. Then the student used red lit
Allushta [10]

Answer: The substance is neutral

Explanation:

If you place red litmus paper into a basic substance, it turn's blue. When it comes in contact with an acidic or neutral substance, it doesn't change colour it remains red.

Blue litmus paper in acid turns red when placed in a basic or neutral solution it remains blue. From this it can be concluded that the solution is neutral.

7 0
3 years ago
Help help help help please
Sav [38]

Explanation:

what is the end of the question???

4 0
3 years ago
White vinegar is a 5.0% by mass solution of acetic acid in water. If the density of white
Alex_Xolod [135]

The pH = 2.41

<h3>Further explanation</h3>

Given

5.0% by mass solution of acetic acid

the density of white  vinegar is 1.007 g/cm3

Required

pH

Solution

Molarity of solution :

\tt M=\dfrac{\%mass\times \rho\times 10}{MW~acetic~acid}\\\\M=\dfrac{5\times 1.007\times 10}{60}\\\\M=0.839

Ka for acetic acid = 1.8 x 10⁻⁵

[H⁺] for weak acid :

\tt [H^+]=\sqrt{Ka.M}

Input the value :

\tt [H^+]=\sqrt{1.8\times 10^{-5}\times 0.839}\\\\(H^+]=0.00388=3.88\times 10^{-3}\\\\pH=3-log~3.88=2.41

7 0
3 years ago
Other questions:
  • The substance gray tin is found to crystallize in a cubic lattice, with an edge length of 646.0 pm. if the density of solid gray
    7·1 answer
  • Here is the combustion reaction for octane (c8h18), which is a primary component of gasoline. how many moles of co2 are emitted
    14·1 answer
  • Suppose you place a hot pack into a vacuum chamber and the hot pack caused the temperature to rise from 21 degrees to 23 degrees
    10·1 answer
  • Which phrase describes the prime meridian
    5·2 answers
  • Determine the method to separate a mixture of ground glass and salt in order to have a pile of ground glass and another pile of
    7·1 answer
  • Given the following reaction:
    5·1 answer
  • A student tested a 0.1 M aqueous solution and made the following observations:
    7·1 answer
  • In the event no property damage or loss occurs during an insurance contract period, the premium payments were wasted only if the
    11·1 answer
  • How does physical properties differ from chemical properties? 1.Chemical properties are observed using your senses. 2.Chemical p
    14·1 answer
  • Which term describes this reaction? upper c upper h subscript 3 upper b r (a q) plus upper o upper h superscript minus (a q) rig
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!