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
sergey [27]
2 years ago
14

A 2.0% (m/v) nacl solution contains ________ g nacl in 300. ml of solution.

Chemistry
2 answers:
Sauron [17]2 years ago
8 0

when composition is given as m/v % , the value is the mass of the solute in 100 mL of the solution

this means there is 2.0 g in 100 mL of the solution

therefore if 100 mL of solution contains - 2.0 g

then 300 mL of the solution would contain - 2.0 g / 100 mL x 300 mL = 6.0 g

there's a mass of 6.0 g of NaCl in 300 mL of the soltuion

UNO [17]2 years ago
3 0

300 mL of NaCl solution contains \boxed{{\text{6 g}}} NaCl.

Further Explanation:

The concentration is the proportion of substance in the mixture. The most commonly used concentration terms are as follows:

1. Molarity (M)

2. Molality (m)

3. Mole fraction (X)

4. Parts per million (ppm)

5. Mass percent ((w/w)%)

6. Volume percent ((v/v)%)

7. Mass per volume percent ((w/v)%)

Mass per volume percent is defined as the amount of solute dissolved in a given volume of the solvent, multiplied by 100 %.

The formula to calculate the mass per volume percent of the solution is as follows:

{\text{Mass per volume}}\left({{\text{m/v}}}\right){\text{\%}}=\left({\frac{{{\text{Mass (g) of solute}}}}{{{\text{Volume (mL) of solution}}}}}\right)\times\left({100\;\%}\right)

Given information:

A 2.0 % (m/v) NaCl solution

To calculate:

Amount of NaCl in 300 mL of the solution

Firstly, we have to find out the amount of NaCl that is present in 2.0 % NaCl solution.

A 2.0 % NaCl solution indicates that 2 g of NaCl is dissolved in 100 mL of the solution.

So the amount of NaCl in 300 mL of the solution is calculated as follows:

\begin{gathered}{\text{Amount of NaCl}}=\left({\frac{{{\text{2 g}}}}{{{\text{100 mL}}}}}\right)\left({{\text{300 mL}}}\right)\\={\mathbf{6}}\;{\mathbf{g}}\\\end{gathered}

So 300 mL of NaCl solution contains 6 g of NaCl.

Learn more:

1. What is the mass of 1 mole of viruses: brainly.com/question/8353774

2. Determine the moles of water produced: brainly.com/question/1405182

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Concentration terms

Keywords: 2.0 %, NaCl, solution, concentration, proportion, substance, mixture, molarity, molality, mole fraction, parts per million, mass percent, volume percent, mass per volume percent, m, v, m/v, m/v %, 6 g.

You might be interested in
In E. coli, the enzyme hexokinase catalyzes the reaction: Glucose + ATP → glucose 6-phosphate + ADP The equilibrium constant, Ke
kondor19780726 [428]

Answer:

Explanation:

Glucose + ATP → glucose 6-phosphate + ADP The equilibrium constant, Keq, is 7.8 x 102.

In the living E. coli cells,

[ATP] = 7.9 mM;

[ADP] = 1.04 mM,

[glucose] = 2 mM,

[glucose 6-phosphate] = 1 mM.

Determine if the reaction is at equilibrium. If the reaction is not at equilibrium, determine which side the reaction favors in living E. coli cells.

The reaction is given as

Glucose + ATP → glucose 6-phosphate + ADP

Now reaction quotient for given equation above is

q=\frac{[\text {glucose 6-phosphate}][ADP]}{[Glucose][ATP]}

q=\frac{(1mm)\times (1.04 mm)}{(7.9mm)\times (2mm)} \\\\=6.582\times 10^{-2}

so,

q ⇒ following this criteria the reaction will go towards the right direction ( that is forward reaction is favorable  until q = Keq

4 0
3 years ago
7 organic compounds of plant origin​
Nat2105 [25]

Explanation:

Among the numerous types of organic compounds, four major categories are found in all living things carbohydrates, lipids, proteins and nucleic acids.

8 0
3 years ago
Different measurements are expressed in different units. Choose the correct Sl units for the lo
swat32

Answer:

The SI units for measuring the velocity of the car: meters per second (m/s)

The Sl units for measuring the acceleration of the car: meters per second squared  (m/s^2)

The SI units for measuring force:  Newton (N)

The SI units for measuring mass: kilograms (kg)

Explanation:

Système international (SI) or International System of Units consist of a list of unit measurement that mostly used by scientist. The scientist from a different country might use different unit that makes them have to convert the result of each other. The usage of the same unit measurement will help the scientist to read that publication easier, make it easier to share and discuss any topic. The unit used is metric since the decimal system also makes the conversion of a unit easier.  

8 0
2 years ago
What is the name of P517
saul85 [17]

Answer:

Ryobi P517 18V Lithium Ion Cordless Brushless 2,900 SPM Reciprocating Saw w/ Anti-Vibration Handle and Tool-Less Blade Changing

Explanation:

8 0
3 years ago
What causes hurricanes in the northern hemisphere to roster counterclockwise ?
Andrew [12]

Answer: The answer is D.

Explanation:

As the air rushes toward the center, it winds up moving in a curved path thanks to the Coriolis effect. This creates a circular spinning pattern as air travels from areas of high pressure to low pressure. That's why hurricanes originating in the northern hemisphere rotate counterclockwise.

Hope this helps!

8 0
3 years ago
Other questions:
  • A majority of the 118 elements on the periodic table are classified as
    11·1 answer
  • 2. Fill in the blanks with an example of each type of matter,
    13·1 answer
  • What do helium (He), neon (Ne), and argon (Ar) have in common?
    11·2 answers
  • Zinc reacts with hydrochloric acid according to the reaction equation Zn ( s ) + 2 HCl ( aq ) ⟶ ZnCl 2 ( aq ) + H 2 ( g ) How ma
    11·1 answer
  • 300 °C would be found in which temperature range?
    13·1 answer
  • Robert Hooke was the first scientist to give the cell a name. Which statement is true about him?
    6·2 answers
  • Platinum-189<br> What is the atomic number
    11·1 answer
  • 1. When _____ <br> are added or removed from an atom, _____<br> is formed
    10·1 answer
  • What do you call the repetitive motion of a wave (such as the way a cork may bob up and down in the ocean)?
    11·1 answer
  • What is the most metallic character with low ionization energies
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!