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
podryga [215]
3 years ago
8

Us

Chemistry
2 answers:
MrRissso [65]3 years ago
5 0

Answer:

24.9%

Explanation:

According to this question, mole fraction of NaCl in an aqueous solution is 0.0927. This means that the mole percent of NaCl in the solution is:

0.0927 × 100 = 9.27%

Let's assume that the solution contains water (solvent) + NaCl (solute), hence, the mole fraction of water will be;

100% - 9.27% = 90.73%

THEREFORE, it can be said that, NaCl contains 0.0927moles while H2O contains 9.073moles

N.B: mole = mass/molar mass

Given the Molar Mass

NaCl: 58.44 g/mol

H2O: 18.016 g/mol

For NaCl;

0.0927 = mass/58.44

mass = 0.0927 × 58.44

5.42g

For H2O;

9.073 = mass/18.016

mass = 9.073 × 18.016

= 16.35g

Total mass of solution = 16.35g + 5.42g = 21.77g

Mass percent of NaCl = mass of NaCl/total mass × 100

% mass of NaCl = 5.42g/21.77g × 100

= 0.249 × 100

= 24.9%

uysha [10]3 years ago
3 0

Answer:

24.9

Explanation:

You might be interested in
When a hydrochloric acid solution is combined with a potassium hydroxide solution, an acid-base reaction occurs Write a balanced
Svetach [21]

Answer:

HCl(aq) + KOH(aq) ⇒ KCl(aq) + H₂O(l)

Explanation:

Hydrochloric acid is an acid because it releases H⁺ in an aqueous solution.

Potassium hydroxide is a base because it releases OH⁻ in an aqueous solution.

When an acid reacts with a base they form a salt and water. This is a neutralization reaction. The neutralization reaction between hydrochloric acid and potassium hydroxide is:

HCl(aq) + KOH(aq) ⇒ KCl(aq) + H₂O(l)

7 0
4 years ago
Will give brainliest <br><br> process name of liquid bromine to bromine vapor
bezimeni [28]

Answer:

evaporation, vaporisation, boiling if change occurs at boiling point

Explanation:

5 0
3 years ago
Read 2 more answers
Explain hybridization and bond angles of following compounds using VBT ​
natima [27]
Apples and bananas guys apples and bananas
5 0
3 years ago
Help!
Vera_Pavlovna [14]

Answer:

One plate slides beneath another due to gravitational pull.

Explanation:

Just took this quiz on edgen :)

7 0
3 years ago
Read 2 more answers
What is the natural rate of nitrogen fixation in Earth’s ecosystems? What is the natural rate of nitrogen fixation in Earth’s ec
quester [9]

Answer:

100 teragrams of nitrogen per year

Explanation:

Nitrogen fixation in Earth's ecosystems is defined as a process where by nitrogen in air is transformed into ammonia or other related nitrogenous compounds. Generally, atmospheric nitrogen is referred to as molecular dinitrogen and it is a nonreactive compound that is metabolically useless to all but a few microorganisms. This process is vital to life due to the fact that inorganic nitrogen compounds are needed for the biosynthesis of amino acids, protein, and all other nitrogen-containing organic compounds. Thus, the natural rate of nitrogen fixation in Earth's ecosystems is 100 tetragrams of nitrogen per year.

7 0
4 years ago
Other questions:
  • The mass of 126c is exactly 12 u. what is the total binding energy of this nucleus?
    5·1 answer
  • How do electrostatic forces affect the geometry and polarity of molecules?
    13·1 answer
  • The destructive force of waves is not felt while they are out at sea, in the open ocean, but it is felt when they do what?
    12·2 answers
  • How many electrons are involved in one equivalent of oxidation-reduction?
    9·1 answer
  • Can you tell me about atoms
    13·1 answer
  • Give me some examples of why is it important to understand how ocean currents flow.
    14·1 answer
  • Need a little help with science please
    6·2 answers
  • Help me pls <br> . About how often does the Moon complete an orbit around Earth? ?
    13·1 answer
  • mass of 2 * 10^21 number of atoms of an element is 0.4g. what is the mass of 0.5 mole of the element?​
    14·1 answer
  • 3 If methane burns in a poor supply of air it will give carbon
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!