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
Readme [11.4K]
3 years ago
14

A solution is made by dissolving 373.5 g of Pb(NO3)2 (molar mass: 331.2 g/mol) in 2.00 × 103 g of water. What is the molality of

the solution?
Chemistry
2 answers:
hram777 [196]3 years ago
7 0
Answer:
molality = 0.564 m

Explanation:
Molality =  number of moles of solute / kg of solvent

1- getting moles of solute:
number of moles = mass / molar mass
we have:
mass = 373.5 g
molar mass = 331.2 g/mol
Therefore:
number of moles = 373.5 / 331.2 = 1.128 moles

2- getting kg of solvent:
mass in kg = mass in grams * 10⁻³
mass in kg = 2 * 10³ * 10⁻³
mass in kg = 2 kg

3- getting molality:
Molality =  number of moles of solute / kg of solvent
Molality = 1.128 / 2
Molalty = 0.564 m

Hope this helps :)
julsineya [31]3 years ago
5 0

Answer:

0.564

Explanation:

You might be interested in
Why are cells the building blocks of an organism.​
ladessa [460]

Answer:A cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.

Explanation:

8 0
3 years ago
A compound contains 72% magnesium and 28% nitrogen. What is its empirical formula?
SashulF [63]

So the empirical formula is Mg3N2

7 0
3 years ago
If you filter a mixture of sand and salt-water, what will the solid residue in the filter paper consist of?
julia-pushkina [17]
Sand only bc the salt dissolved and sand doesn't
8 0
3 years ago
Could an organism survive without its mitochondria if all the other organelle were present
lisov135 [29]
No, <span>mitochondria convert the sugar, can give it(the cell) Nutrients (food) to mainly keep it fresh and alive. Without cells mitochondria can't do its job.</span>
8 0
3 years ago
Read 2 more answers
The dark areas on the map show the distribution of coral reefs around the world. What explanation best
arsen [322]

Answer:

I think is D not sure

Explanation:

8 0
2 years ago
Other questions:
  • Calculate the number of moles contained in 550 ml of carbon dioxide at STP
    13·1 answer
  • What technology do scientists use to map the human genome?
    9·2 answers
  • Your lab partner told you that he measured out 25.0 mL of the unknown acid solution. But he actually went above the line on the
    12·1 answer
  • Sometimes when performing a crystallization, one solvent alone will not work and you have to use a solvent-pair. Will the solven
    7·1 answer
  • What is the heat transfer mechanism responsible for the daily wind cycle? A. Heat transfer through conduction B. Heat transfer t
    10·2 answers
  • In a resting state, sodium (Na ) is at a higher concentration outside the cell and potassium (K ) is more concentrated inside th
    14·1 answer
  • Name element atomic mass 26 mass number 58 with charge of 2+
    5·1 answer
  • rewrite this sentence to reflect the correct way to write latitude 30 degrees north, 50 minutes, 17 seconds
    15·1 answer
  • Gerry is looking at salt under a powerful microscope and notices a crystalline structure. What can be known about
    13·1 answer
  • During combustion reaction of propane (C3H8) the amount of CO2 gas was 10 grams. Calculate the mass of burnt propane, oxygen and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!