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
noname [10]
3 years ago
9

3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.

Chemistry
1 answer:
kotykmax [81]3 years ago
5 0

Answer:

The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%

Explanation:

When a solute dissolves in a solvent, the mass of the resulting solution is a sum of the mass of the solute and the solvent.

A percentage is a way of expressing a quantity as a fraction of 100. In this case, the percentage by mass of a solution is the number of grams of solute per 100 grams of solution and can be represented mathematically as:

Percent by mass=\frac{mass of solute}{mass of solution} *100

In this way it allows to precisely establish the concentration of solutions and express them in terms of percentages.

In this case:

  • mass of solute: 3.55 g
  • mass of solution: 3.55 g + 88 g= 91.55 g

Replacing:

Percentbymass=\frac{3.55}{91.55}*100

Percent by mass= 3.88%

<u><em>The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%</em></u>

You might be interested in
Use Hess law and the following equations to calculate H for the reactio below
aleksandr82 [10.1K]

Answer: B2H6 (g) + 3O2 (g) → B2O3 (s) + 3H2O (g) (ΔH = -2035 kJ/mol) 3H2O (g) → 3H2O (l) (ΔH = -132 kJ/mol) 3H2O (l) → 3H2 (g) + (3/2) O2 (g) (ΔH = 858 kJ/mol)

Explanation: ??

8 0
3 years ago
In which volcanic eruption is pyroclastic materials released
juin [17]


There are many kinds of pyroclastic material ejected during a volcanic eruption. Ash is the most common pyroclastic rock material ejected during an eruption. Volcanic ash is so fine that it can be blown into the atmosphere and picked up by the jet stream where it can circle the Earth for several years.

3 0
3 years ago
Which of the following is an example of a Lewis acid?
Agata [3.3K]

Answer:

C. BF3

Explanation:

The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.

4 0
3 years ago
What is the ionic equation for HBr(aq) + NH3(aq)
Alik [6]
Complete equation, ionic equation, and net ionic equation for NH4C2H3O2(aq) + NH3 (aq)
4 0
3 years ago
All of the above
Natalka [10]
The plants without any fertiliser could be the control, to see what the change in the independent variable (fertiliser) does to the growth of the plant (dependant variable).

Hope that helps.
8 0
3 years ago
Other questions:
  • A powder contains FeSO4⋅7H2O (molar mass=278.01 g/mol), among other components. A 3.930 g sample of the powder was dissolved in
    13·1 answer
  • Would your results be he same if 1.5 g of barium chloride was used instead of 1.3 g? same with 0.7 g of barium chloride?
    11·1 answer
  • Convert 2.34x10^5 ms to cs
    13·1 answer
  • Determine the temperature of 1.42 mol of a gas contained in a 3.00-L container at a pressure of 123 kPa.
    11·1 answer
  • 11) What is the volume of 4.92 grams of hydrogen gas at STP? (Show the work using dimensional analysis)
    14·1 answer
  • When using the benedict's assay, which color would indicate the most reducing sugar present?
    12·1 answer
  • Which statement correctly describes cellular respiration
    8·1 answer
  • Propane is used as a fuel for camp stoves. It undergoes combustion to form carbon dioxide and water.
    6·1 answer
  • What structures are part of the body's first line of defense against pathogens
    15·1 answer
  • 3. Beaker A (Heat Meter) tells us how much heat energy left the hot
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!