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
gregori [183]
3 years ago
13

What is the molarity of a solution that is prepared by adding 57.1 g of toluene (c 7 ​ h 8 ​ ) (density = 0.867 g/ml) to a 250 m

l volumetric flask, and then filling to the mark with benzene (c 6 ​ h 6 ​ ) (density = 0.876 g/ml)?
Chemistry
1 answer:
Virty [35]3 years ago
4 0

Answer:

2.48 mol/L.

Explanation:

  • The molarity of the solution can be expressed as <em>the number of moles of solute in 1.0 liter of the solution, </em>(M = n / V).
  • It is also can be calculated from the relation:

<em>M = (mass / molar mass) solute x (1000 / V of solution)</em>

The solute is toluene and the solvent is benzene.

mass of toluene (solute) = 57.1 g,

molar mass of toluene (solute) = 92.14 g/mol.

volume of the solution = 250 ml.

∴ M =  (mass / molar mass) solute x (1000 / V of solution) = [(57.1 g / 92.14 g/mol) x (1000 / 250 ml)] = 2.48 mol/L.

You might be interested in
The production of a gas when acid is added to a sample of chalk is an indication of what type of reaction
ahrayia [7]
It is a result of a chemical reaction.
5 0
3 years ago
Read 2 more answers
If a solution has a pH of 7.41, determine its H+ concentration.
makvit [3.9K]
[H+]=10^-^p^H

[H+]=10^-^7^.^4^1

[H+] = 3.89 x 10^-^8
8 0
3 years ago
The water table is the..
Zielflug [23.3K]
The upper surface of the zone of saturation is called the water table
6 0
4 years ago
A chemical compound that contains the –NH2 functional group is a(n) _____.
kirill115 [55]
This represents a primary amine. An amine has a nitrogen group that is connected to three substituents via single bonds. The number of carbon-based substitutents determines whether it is primary, secondary, or tertiary. In this case, since 2 substitutents are just hydrogen atoms, and only one has a carbon-based skeleton, this is a primary amine.
7 0
4 years ago
¿Qué son los lantánidos y actínidos?
harkovskaia [24]

Answer: En estos grupos de los elementos de transición se encuentran las llamadas tierras raras, separadas del resto de elementos de la tabla, que pertenecen al grupo IIIB y se les conoce como lantánidos y actínidos.

6 0
2 years ago
Other questions:
  • Which phrase defines an aquifer? A. the total amount of precipitation that falls on an area in a year B. the network of streams
    7·2 answers
  • What’s the molar mass of Lead-208
    10·1 answer
  • Which of the following is a description of an exothermic reaction?
    10·1 answer
  • Hydrogen gas can be made by reacting methane (CH4) with high temperature steam: CH4(g) + H2O(g) ---&gt; CO(g) + 3H2(g)
    10·2 answers
  • What is the product of 3 x 10² kg and 2 x 10-3<br> kg?
    15·1 answer
  • What determines the mass number of an element? (2 points)
    6·2 answers
  • 3. If 2.00 mL of the 0.15 M Co(NO3)2 solution is diluted to 10.00 mL with water, what is the resulting Co(NO3)2 concentration?
    10·1 answer
  • You travel by express Greyhound bus from Indianapolis, IN to Tampa, FL; this is a distance of 1,070 miles. With no stops, the tr
    15·1 answer
  • One isotope has 6 protons and 8 neutrons which reference names this isotope​
    7·1 answer
  • What does a line of best fir shows you in a a scatee plot
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!