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
Desiré was investigating a chemical reaction.When she heated it up, she found that sulfuric acid changed into water. She made th
pochemuha

Answer:

no it is not a complete model

3 0
3 years ago
Only_________are involved in forming chemical bonds betwen two atoms
olchik [2.2K]

C)

<em>O</em><em>n</em><em>l</em><em>y</em><em> </em><em>v</em><em>a</em><em>lence</em><em> </em><em>electrons</em><em> </em><em>are involved in forming chemical bonds betwen two atoms</em><em>.</em>

Hope this helped you- have a good day bro cya)

4 0
2 years ago
The diagram below shows the energy conversions of the Krebs cycle, which is part of cellular respiration. The U-shaped
Jobisdone [24]
The answer to your problem is B
8 0
2 years ago
Read 2 more answers
ALUMINUM HAS THREE OUTER ELECTRONS Will the element share, gain, or lose electrons when bonding with another element? explain​
bearhunter [10]

Answer:

aluminum will lose 3 electrons.

Explanation:

to be stable and losing 3 is easier than gaining 5.

anddd its a metal. :)

7 0
2 years ago
How does a chemical reaction obey the law of conservation of matter?
Sunny_sXe [5.5K]

Answer:

Normally, it explains that matter cannot be created or destroyed. It demonstrates different chemical reactions that help show the different transformations of the matter but will never destroy it or create it.

4 0
3 years ago
Other questions:
  • Which element would be the most reactive with K? Br, Na, Ar, or O? And how do you know?
    9·1 answer
  • Chemical reactions that absorb energy are said to be _________.
    6·1 answer
  • An automobile tire contains air at 320.×103 Pa at 20.0 ◦C. The stem valve is removed and the air is allowed to expand adiabatica
    11·1 answer
  • g A spontaneous process is one in which: A. releases a large amount of heat B. may happen (is possible) C. will rapidly approach
    8·1 answer
  • In the reaction Zn H 2SO 4→ ZNSO4 + H2, which, if any element is oxidized
    9·1 answer
  • Need help I don't remember what to do?
    10·1 answer
  • How many grams of lithium fluoride is required to make 1.2 L of a 3.5 M<br> solution?
    10·1 answer
  • What is the specific latent heat of fusion for a substance that takes 550 kJ to melt 14 kg at 262 K?
    7·1 answer
  • Identify two possible reasons for unemployment​
    5·2 answers
  • PLEASE HELP ME ITS DUE IN 25 MINUTES True or false iron and nickel are less dense than silicates ?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!