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
cluponka [151]
3 years ago
11

9.49.8 grams of Kl is dissolved in 1.00 kg of solvent. What is the molality?

Chemistry
1 answer:
hjlf3 years ago
3 0

Answer:

Molality = 9.498 mol  k g − 1

Explanation:

A final way to express the concentration of a solution is by its molality. The molality ( m ) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0 mol of NaCl dissolved into 1.0 kg of water is a “one-molal” solution of sodium chloride.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI  

number of moles of KI = 9.49.8 g / 1.00 g  m o l − 1

number of moles of KI = 9.498 moles  

molality = 9.498 moles / 1kg  

molality = 9.498 mol  k g − 1

You might be interested in
What kind of energy is stored in bonds of molecules
Ne4ueva [31]
The answer to your question would more than likely be chemical energy, natural gas, and chemical energy. but I don't know what grade your in I'm in eighth if your below I know the answer. I'm pretty sure I had a question exactly like this last year but that was last year so if it's wrong sorry. I looked it up on Google to make sure
3 0
3 years ago
Which of the following substance is NOT matter? *
Yuri [45]
All of them are matter tho
5 0
3 years ago
PLEASE HELP MEEEEE!!!
ololo11 [35]

Answer:

Increasing temperature increases the solubility of most salts, but not all. The reason for the differences is that dissolution involves three steps: breaking bonds of salt in the lattice; forming cavities in water the same size as the ions; interacting the salt with water in the cavity.

7 0
3 years ago
Did you ever rediscover something of yours that you<br> had forgotten? How did you react?
3241004551 [841]

Answer:

Yes and im usually sooooo happy to see it.

8 0
3 years ago
Read 2 more answers
Calculate the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L.
Aleonysh [2.5K]

Answer: 15.5^0C

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 0.987 atm

V = Volume of gas = 12 L

n = number of moles = 0.50

R = gas constant =0.0821Latm/Kmol

T =temperature =  ?

T=\frac{PV}{nR}

T=\frac{0.987atm\times 12L}{0.0820 L atm/K mol\times 0.50mol}=288.5K=(288.5-273)^0C=15.5^0C

Thus the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L is 15.5^0C

8 0
3 years ago
Other questions:
  • Consider the following reversible reaction.
    9·1 answer
  • What issue does the designer most likely need to improve in order for the dishwasher to be a good product to sell
    6·2 answers
  • The element in period 3 with the most metallic character is A sodium
    5·1 answer
  • A cation is any atom or group of atoms with
    11·2 answers
  • What is the volume of 120mg of water
    10·1 answer
  • Which of the following is the correct formula for nitrogen trifluoride
    13·1 answer
  • What is the binding energy of 1 mole of 23 Pu if the mass defect is 0.001896 kg/mol?
    8·1 answer
  • Please help immediately it’s due today
    7·1 answer
  • PLEASE ANSWER FAST DUE IN 2 MINUTES
    8·1 answer
  • 1. A loaf of bread has a volume of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!