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
Anna11 [10]
3 years ago
5

The mole fraction of NaCl in an

Chemistry
1 answer:
posledela3 years ago
6 0

The weight/weight percent(%w/w) of NaCl in  solution : 33.03%

<h3>Further explanation</h3>

Given

Mole fraction of NaCl : 0.132

Required

The weight/weight percent of NaCl

Solution

1 mol solution : 0.132 mol NaCl + 0.868 mol H₂O

mass NaCl :

\tt 0.132\times 58.44 g/mol=7.714~g

mass H₂O :

\tt 0.868\times 18.016~g/mol=15.64~g

Total mass = 7.714 + 15.64 = 23.354 g

\tt \%NaCl=\dfrac{7.714}{23.354}\times 100\%=33.03\%

You might be interested in
What must occur ??????
Vsevolod [243]

Air masses form fronts when B, they collide with each other

7 0
3 years ago
The trend in electronegativity is F &gt;Cl &gt;Br; therefore, the most ionic compound (CH2F2) has the lowest boiling point, and
bulgar [2K]

Answer:

False

Explanation:

Increase in polarity of a molecule leads to higher boiling points. The more polar a molecule is, the higher the energy required to breaks intermolecular forces of attraction hence the higher the boiling point. This is the reason why ionic compounds and compounds having polar covalent bonds in them tend to have high boiling points.

5 0
3 years ago
What volume is occupied by 8.7 g of chlorine gas, Cl2, at 23°C and 1.15 atm pressure
Harrizon [31]

Answer:

V = 5.17L

Explanation:

Mass of gas = 8.7g

T = 23°C = (23 + 273.15)K = 296.15K

P = 1.15 atm

V = ?

R = 0.082atm.L / mol.K

From ideal gas equation

PV = nRT

P = pressure of the gas

V = volume of the gas

n = no. Of moles

R = ideal gas constant

T = temperature of the gas

no of moles = mass / molar mass

Molar mass of Chlorine = 35.5g / mol

No. Of moles = 8.7 / 35.5

No. Of moles = 0.245 moles

PV = nRT

V = nRT / P

V = (0.245 * 0.082 * 296.15) / 1.15

V = 5.9496 / 1.15

V = 5.17L

The volume of the gas is 5.17L

4 0
3 years ago
A 5 g sample of pure gold has a density of 19.3 g/ml. Your friend purchased a gold ring that was made of 25 g of pure gold. What
patriot [66]

Answer:

96.5 g/ml

Explanation:

If 5g is 19.3 then 25g is 19.3x5 which is 96.5 g/ml

7 0
2 years ago
Read 2 more answers
I need help with my quiz.
katrin2010 [14]

Answer:

C

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • If the frequency of a wave is small the wavelength would be _____, and the energy would be______.
    9·1 answer
  • How many moles of Ag can be produced if 350. g of Cu are reacted with excess AgNO3 according to the equation Cu(s) + 2AgNO3(aq)
    7·2 answers
  • List 3 examples of pure substances
    14·2 answers
  • The acidic substance in vinegar is acetic acid, HC2H3O2. When 4.00 g of a certain vinegar sample was titrated with 0.200 M NaOH,
    8·1 answer
  • Which ion is the only negative ion present in an aqueous solution of an Arrhenius base?
    10·1 answer
  • When oxygen and aluminum form an ionic compound, what is the formula? O2Al3 O3Al2 A3O2 Al2O3
    5·1 answer
  • At 700 K, CCl4 decomposes to carbon and chlorine. The Kp value for the decomposition is 0.76. Find the starting pressure of CCl4
    12·2 answers
  • During the daytime, we can see things because the sun is giving off
    11·2 answers
  • Antara berikut ciri manakah bear tentang cuka?
    12·2 answers
  • What mass of potassium nitrate is needed to generate 215.0 L of gas, composed of 111.0 L of N2 and 104.0 L of O2 at 0.920 atm an
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!