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
Sloan [31]
3 years ago
9

8. When a 2.5 mol of sugar (C12H22O11) are added to a certain amount of water the boiling point is raised by 1 Celsius degree. I

f 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? Show all calculations leading to your answer OR use 3 – 4 sentences to explain your answer.
9. If 5.40 kcal of heat is added to 1.00 kg of water at 100⁰C, how much steam at 100⁰C is produced? Show all calculations leading to an answer.
Chemistry
1 answer:
Julli [10]3 years ago
5 0

Hey there!:

8) ΔTb = i*Kb*m  

 m is molality

 Since same number of mol is added to same amount of water in both cases

m will be same for both

is 1 for glucose since it is covalent compound

is 4 of Al(NO3)3 as it breaks into 1 Al₃⁺ and 3 NO₃⁻

So,  ΔTb will be 4 times in aluminum nitrate case

So, boiling point will change by 4ºC


9) use Q = m*  L

L =  heat of vaporization so:

T1=T2=100ºC

5.40 * 1000 => 5400  cal/g

Q =   5400 / 540

Q = 10 grams


Hope that thlps!

You might be interested in
Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. what is helen most l
Veseljchak [2.6K]
Increase the amount of current

3 0
3 years ago
Read 2 more answers
How many atoms are in a solid piece of iron that has a mass of 24.0g?
Julli [10]
Atomic mass iron ( Fe ) = 55.84 a.m.u

55.84 g ------------ 6.02x10²³ atoms
24.0 g ------------- ??

24.0 x ( 6.02x10²³) / 55.84

=> 2.58x10²³ atoms
5 0
3 years ago
Which of the following best states the difference between an alcohol and an ether?
goldenfox [79]
I'd say it would be
D 
8 0
3 years ago
How many moles are in 5.0 x 10^25 atoms of iron?
Andreas93 [3]

Hello!

To find the number of moles that are in the given amount, we need to divide the total number of atoms by Avogadro's number, which is 1 mole is equal to 6.02 x 10^23 atoms.

5.0 x 10^25 / 6.02 x 10^23 ≈ 83.0564

Therefore, there are about 83.06 moles of iron (sigfig: 83 moles).

7 0
3 years ago
What category is most of the elements part of
rjkz [21]

Answer:

transition metals

Explanation:

they're the elements in yellow in the picture

6 0
3 years ago
Other questions:
  • At STP, which gas sample has a volume of 11.2 liters?
    7·1 answer
  • Questions and Problems 22 When water is heated, the temperature eventually reaches a constant value and forms a plateau on the g
    13·1 answer
  • The concentration of a solution can be expressed in a number of ways. choose the solution expressions that are equal to a soluti
    9·1 answer
  • Calculate ΔSrxn∘ for the reaction
    10·2 answers
  • Which of the following occurs when a reaction in a solution is at equilibrium and
    9·1 answer
  • 1.00 mL of 12.0 M HCl is added to 1.00 L of a buffer that contains 0.110 M HNO2 and 0.170 M NaNO2. How many moles of HNO2 and Na
    10·1 answer
  • Calculate the molecular weight of a dibasic acid.0.56gm of which is required 250ml of N/20 sodium hydroxide solution for neutral
    7·1 answer
  • Due Tomorrow!<br><br> What is [OH-] of a solution<br> with a pH of -1.0? <br><br> Answer in M
    7·1 answer
  • Q. Why is diffusion faster in a gas than in a liquid? explain your answer according to particle theory and practical example aro
    7·1 answer
  • A triple bond is made up of<br> sigma bond(s) and<br> 1,2<br> pi bond(s).<br> 2,1
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!