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
Kobotan [32]
3 years ago
15

Why is calcium chloride (rock salt, CaCl2) more effective than sodium chloride (table salt, NaCl) at de-icing roads in the winte

r? A. Calcium chloride only breaks into 2 ions, while sodium chloride does not break up and remains 1 ion. B. Calcium is a larger molecule than sodium, so it has a greater effect. C. The additional chlorine atom forms a stronger bond between the atoms in calcium chloride than in sodium chloride, so calcium chloride remains one molecule while sodium chloride breaks apart. D. Calcium chloride breaks into 3 ions, while sodium chloride only breaks into 2 ions.
Chemistry
2 answers:
Rzqust [24]3 years ago
8 0

Answer:

d im pretty sure i got the same answer

Explanation:

Tema [17]3 years ago
7 0

Answer:

The correct option is;

D. Calcium chloride breaks into 3 ions, while sodium chloride only breaks into 2 ions

Explanation:

To help melt the ice on icy streets, calcium chloride (CaCl₂) is a more preferred salt type to sodium chloride (NaCl) as when it dissociates into ions in the ice, it forms three ions: a calcium ion, Ca²⁺, and two chloride ions, 2 Cl⁻, while sodium chloride forms two ions: one sodium ion, Na⁺, and one chloride ion, Cl⁻

According to the freezing point depression equation, we have;

ΔT = K_f × m × i

Where;

ΔT = Change in freezing point temperature

K_f = The freezing point depression constant

m = The solution's molality

i = van't Hoff factor

The calcium chloride salt will cause the most depression because the van't Hoff factor is 3 for calcium chloride and 2 for sodium chloride.

You might be interested in
4. One gram of of ............... contains one type of atoms. a. iron b. ammonia c. hydrogen chloride d. water​
patriot [66]

Answer: hydrogen chloride.

Explanation:

7 0
2 years ago
Please answer each:) <3
Nutka1998 [239]
⭐Hola User____________

⭐Here is Your Answer...!!!

⭐____________________

SOLUTIONS

↪1) Aqueous Solution

↪2) Solvent

↪3) Solute
_______________________

⚓〽⚓
4 0
3 years ago
Investigate and explain that when a force is applied to an object but it does not move, it is because another opposing force is
N76 [4]

Answer:

4. Force 1 Force 2 Comparison of Forces

Friction Gravity Force 1 is equal to Force 2

Explanation:

5 0
3 years ago
Read 2 more answers
Why are scientific models important in the study of science? A. They are useful only for teaching students about science. B. The
madreJ [45]
The correct answer should be B.
The correct answer would be B.
4 0
3 years ago
Read 2 more answers
3. The doctor notices that Janet has long fingernails, and comments that fingernails grow at a rate (or
Viktor [21]

Answer:

7.93 × 10⁻¹³ km/s

Explanation:

Step 1: Given data

Rate of growth of the fingernails (r): 2.50 cm/year

Step 2: Convert "r" from cm/year to km/year

We will use the following conversion factors.

  • 1 m = 100 cm
  • 1 km = 1000 m

\frac{2.50cm}{year} \times \frac{1m}{100cm} \times \frac{1km}{1000m} = 2.50 \times 10^{-5} km/year

Step 3: Convert "r" from km/year to km/s

We will use the following conversion factors.

  • 1 year = 365 day
  • 1 day = 24 h
  • 1 h = 60 min
  • 1 min = 60 s

\frac{2.50 \times 10^{-5} km}{year} \times \frac{1year}{365day} \times \frac{1day}{24h} \times \frac{1h}{60min} \times \frac{1min}{60s} = 7.93 \times 10^{-13} km/s

2.50 cm/year is equal to 7.93 × 10⁻¹³ kilometers/second.

6 0
3 years ago
Other questions:
  • Average atomic mass work
    13·1 answer
  • a student used 10 mL water instead of 30 mL for extraction of salt water from mixture. how may this change the percentage of NaC
    11·1 answer
  • Question: A boy swimming in a lake smacks the surface of the water with his hand, creating sound waves that travel through the w
    15·1 answer
  • Which of the following statements correctly expresses Collision Theory
    10·1 answer
  • Benzene and toluene form ideal solutions. Consider a solution of benzene and toluene prepared at 25∘C. As suming that the mole f
    13·2 answers
  • What part of ear caries electrical impulses to the brain?
    5·2 answers
  • How do you draw a bohr diagram for a boron ion?
    7·2 answers
  • Lucy got a new car for her birthday so she went 12 km east and then 8 km South. What is her distance
    14·1 answer
  • If you have 3 moles of calcium carbonate, how many grams of calcium bicarbonate are formed?
    7·1 answer
  • 1. MnO₂ is an example of what type of bond?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!