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
Digiron [165]
2 years ago
6

What's the molality of a solution with 120 g of NaCl and 30 kg of water?

Chemistry
1 answer:
pogonyaev2 years ago
4 0

<u>Answer:</u> The correct option is A) 0.068 m

<u>Explanation:</u>

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molarity:

\text{Molality of solution}=\frac{\text{Given mass of solute}}{\text{Molar mass of solute}\times \text{Mass of solvent (in kg)}} .....(1)

We are given:

Given mass of NaCl = 120 g

Molar mass of NaCl = 58.45 g/mol

Mass of solvent = 30 kg

Putting values in equation 1, we get:

\text{Molality of NaCl}=\frac{120}{58.44\times 30}\\\\\text{Molality of NaCl}=0.068m

Hence, the correct option is A) 0.068 m

You might be interested in
Each warning label must contain this element and its purpose is to provide a visual alert to users to the chemical hazards to wh
jekas [21]
The correct answer of the given question above would be a PICTOGRAM. OSHA’s required pictograms must be in the shape of a square set at a point and include a black hazard symbol on a white background with a red frame sufficiently wide enough to be clearly visible. 
8 0
3 years ago
Read 2 more answers
How did oxygen first enter Earth's atmosphere?
forsale [732]

Answer:

I think c biological processes

8 0
2 years ago
What temperature should vegetables be cooked at to hold them hot?
shtirl [24]

Answer:

135°F

Fruits and vegetables that are cooked for hot holding must be cooked to a temperature of 135°F (57.2 °C).

Explanation:

Hope it helps you...

(◍•ᴗ•◍)

4 0
2 years ago
What’s a conjugative Bas of OH-
LiRa [457]

Answer:

the answer is O²- hopefully

8 0
3 years ago
Which statement is correct with respect to gross primary productivity
bezimeni [28]
Gross primary production and net primary production. Gross primary production is the amount of chemical energy as biomass that primary producers create in a given length of time.
8 0
3 years ago
Other questions:
  • Which part of the mantle is still a solid but flows like a thick, heavy liquid?
    15·2 answers
  • Which of the following describes an element that is reduced in a reaction? It acts in the reactant that is the reducing agent. I
    11·1 answer
  • What is the correct name for Mn(NO3),
    14·1 answer
  • Which statement about boiling point is FALSE?
    14·1 answer
  • Helllllllppppppp meeeee pweaaseee
    15·1 answer
  • Aqueous sulfuric acid H2SO4 reacts with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2
    8·1 answer
  • Formation of Water Reaction
    10·2 answers
  • An atom that has 13 protons and 15 neutrons is element
    13·1 answer
  • What is the activation energy of this reaction?<br><br> 50 kJ<br> 100 kJ<br> 150 kJ<br> 200 kJ
    9·2 answers
  • PLEASE HELP I HAVE TO DO THIS BENCHAMRK QUESTION!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!