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
Alenkasestr [34]
3 years ago
13

Choose the aqueous solution below with the lowest freezing point. These are all solutions of nonvolatile solutes and you should

assume ideal van't Hoff factors where applicable. Choose the aqueous solution below with the lowest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.
A. 0.075 m Li I
B. 0.075 m (NH4)3PO4
C. 0.075 m NaIO4
D. 0.075 m KCN
E. 0.075 m KNO2
Chemistry
1 answer:
Ymorist [56]3 years ago
4 0

Answer:

B. 0.075 m (NH4)3PO4

Explanation:

Our strategy here is to recall the van´t Hoff factor, i, for the colligative properties of electrolyte solutions which appears as the consequence that electrolytes disociate completely in their solutions in water.

Thus in this problem we need to determine i and then realize the one with the lowest freezing point will have the biggest  i ( all the concentrations are equal) since

ΔTf = i m Kf

Substance  van´t Hoff factor

Li I                             2

(NH4)3PO4              4

NaIO4                       2

KCN                          2

KNO2                       2

The correct answer is B. 0.075 m (NH4)3PO4

You might be interested in
Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that ap
Elza [17]

Answer:

According to Coulomb’s law, the Ca and Se ions have 4 times the attractive force (2+ × 2-) than that of the K and Br ions (1+ × 1-).

Explanation:

From Coulomb's law, the attractive force between calcium and selenium ions is four times the attractive force between potassium and bromide ions.

This has something to do with size and magnitude of charge. Calcium ions and selenide ions are smaller and both carry greater charge magnitude than potassium and bromide ions. This paves way for greater electrostatic attraction between them when the distance of the charges apart is minimal. Hence a greater lattice energy.

4 0
2 years ago
The alveoli are surrounded by __________ carrying blood to and from the heart.
natka813 [3]
The alveoli are surrounded<span> by tiny blood vessels, called capillaries. The </span>alveoli<span> and capillaries both have very thin walls, which allow the oxygen to pass from the </span>alveoli<span>to the blood. The capillaries then connect to larger blood vessels, called veins, which bring the oxygenated blood from the lungs to the heart.</span>
4 0
3 years ago
A student decided to research primate psychology for their science project. They measured how long it took gorillas to adapt to
Gwar [14]

Answer: the answer is  D im pretty sure

Explanation:

3 0
2 years ago
What determines the order of placement of the elements on the modern Periodic Table?
Pachacha [2.7K]
The order of placement of the elemnts on the modern Periodic Table is determinated by:
1)atomic number (Z=number of protons).
3 0
3 years ago
Read 2 more answers
Hhhhhhhhhhheeeeeeelppppppp<br>will give brainliest
wlad13 [49]

Answer:

Kinetic energy.

Explanation:

7 0
2 years ago
Other questions:
  • How many electrons does ga lose to achive noble gas arrangement?
    15·1 answer
  • What is the mass of 2.56 × 10–4 moles of Fe2O3? : 6.23 × 105 159.6 g 1.60 × 0–6 g 4.09 × 10–2 g
    9·1 answer
  • The solvent was propanone. Which of the three basic colours is most soluble in propanone?​
    7·1 answer
  • What's the name of a wave moving along a line?
    6·2 answers
  • Solid carbon and oxygen gas react to yield carbon dioxide gas. write the following balanced chemical equation. please help
    10·1 answer
  • The new boiling point is 101.02°C. Suppose that you add another 2.0 mol of sucrose to this solution. What do you predict the new
    13·2 answers
  • Are the electron geometries of water and ammonia similar?
    10·1 answer
  • Help me rn plz......​
    7·2 answers
  • I need help with this one pls, ty! ASAP
    11·1 answer
  • Two isotopes of the same element must have the same
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!