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
vivado [14]
3 years ago
5

What is the concentration, in mass percent (m/m), of a solution prepared from 50.0 g nacl and 150.0 g of water?

Chemistry
2 answers:
Nataly [62]3 years ago
8 0
Mass of solute ( m1 ) = 50.0 g

mass of solvent ( m2 ) = 150.0 g

Therefore:

m/m = ( m1 / m1 + m2 )

m/m = ( 50.0 / 50.0 + 150.0 )

m/m = ( 50.0 / 200 )

m/m = 0.25
Charra [1.4K]3 years ago
8 0

Answer: 25%m/m

Explanation: The concentration of a solution (in mass percent) is the mass of the solute divided by the mass of the solution, in the given case, the solute is NaCl and its mass is 50.0 g, and the mass of the solution will be the mass of the solute plus the mass of the solvent (water):

mass of the solution= mass of NaCl+ mass of water

mass of the solution=50.0 g+ 150.0 g

mass of the solution=200.0 g

concentration (%m/m)=100*mass of the solute/mass of the solution

concentration (%m/m)=100*50.0g/200.0 g

concentration (%m/m) =25%m/m

You might be interested in
Which of the following best explains velocity?
zhannawk [14.2K]
Velocity is explained as the *speed and *direction something might move.  Speed means moving and Direction means a certain way (not stationary.)

Hope this helps!
8 0
2 years ago
How many Helium atoms are in 12 grams of Helium?
horsena [70]
12gHe/1 × 1molHe/4.0026g × 6.02x10^23atomHe/1mol = 1.8 atoms
6 0
3 years ago
For each of the following compounds, identify what type of bonding holds them together.
svet-max [94.6K]

Explanation

NaCl:  Ionic crystal lattice forces

Hg:   Metallic bonding

CO₂:  London dispersion forces

CH₄:  London dispersion forces

Li₂O:  Ionic crystal lattice forces

Ag:  Metallic bonds

Ionic crystal lattice forces are strong electrostatic force of attraction between oppositely charged ions arranged into a crystal lattice of ionic compound. NaCl and Li₂O are ionic compounds

London dispersion forces holds the molecules of carbon dioxide and methane. They are weak attractions found between non-polar (and polar) molecules.

Metallic bonds exists between Mercury and Gold atoms. This is due to sea of electrons present.

4 0
3 years ago
The solid compound, K2SO4, contains?
givi [52]
The solid compound, K2SO4 contains a cation called K+ and an anion called SO42-. In this case, there are 2 atoms of potassium, 1 atom of sulfur and 4 moles of oxygen. The compound also contains ionic bonds because of the composing non-metals and metal. 
3 0
3 years ago
Which statement identifies the element arsenic?
insens350 [35]

Answer : Option A) Atomic number of Arsenic is 33.


Explanation : Arsenic contains same number of protons in its atomic nucleus. In arsenic there are 33 protons found in the atomic nucleus. Hence, the atomic number will be 33. It has 5 valence electrons in its outermost shell, which is also called as valence shell. So, its valency becomes 5.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below. A pur
    15·1 answer
  • A variation of the acetamidomalonate synthesis can be used to synthesize threonine. The process involves the following steps: Et
    9·1 answer
  • What is the name of the large dome-shaped muscle under your lungs that helps you breathe?
    11·2 answers
  • The engineers at a hydroelectric dam designed a computer program that will allow them to determine the amount of energy they can
    10·1 answer
  • Which equation agrees with the ideal gas law?<br> V V2<br> OTT<br> O V. = V202<br> o Pina = P212
    8·1 answer
  • Give structural formula of ethylene. What type of bond is found in between carbon and hydrogen? Why is the bond between carbon a
    13·1 answer
  • Please explain how to find each answer solution.
    5·1 answer
  • 2NaBr + 1Cl2 = 2NaCl + Br2 reaction type
    13·1 answer
  • What action should be performed when heating a solid to dryness to prevent spattering caused by bumping
    6·1 answer
  • Question 3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!