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
frosja888 [35]
3 years ago
13

In the winter , people often buy large bags of rock salt to sprinkle on their walkways . Why do people do this?

Chemistry
1 answer:
slamgirl [31]3 years ago
6 0

The salt causes the water to freeze at a lower temperature. When a solute, aka salt, is introduced to the system, the freezing point is lowered. This makes the water freeze at a lower temperature.

You might be interested in
The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (s
Mrac [35]

Answer:

Mass of hydrogen gas evolved is 0.0749 grams.

Explanation:

Total pressure of the gases = p = 758 mmHg

Vapor pressure of water = 23.78 mmHg

Pressure of hydrogen gas ,P =  p - 23.78 mmHg = 758 mmHg - 23.78 mmHg

P = 734.22 mmHg = \frac{734.22}{760} atm=0.966 atm

Temperature  of of hydrogen gas ,T= 25°C =298.15 K

Volume of hydrogen gas = V = 0.949 L

Moles of hydrogen gas =n

PV = nRT (Ideal gas equation )

n=\frac{PV}{RT}=\frac{0.966 atm\times 0.949 L}{0.0821 atm L/mol K\times 298.15 K}

n = 0.03745 mol

Moles of hydrogen gas = 0.03745 mol

Mass of  0.03745 moles of hydrogen gas  = 0.03745 mol × 2 g/mol = 0.0749 g

Mass of hydrogen gas evolved is 0.0749 grams.

3 0
3 years ago
2. Some nitrogen at a pressure of 35.75 p.s.i is in a 100 L container. If the container's volume is reduced to 2250 ml then what
elena-s [515]

Answer:

1455.6

Explanation: you first convert 2250ml to l by dividing by 1000 so you get 2.25l then you use Boyles law which is p1v1=p2v2 then insert values

35.75*100=p2*2.25 then divide both sides by 2.25 then you get 1455.6

4 0
3 years ago
Chemistry chemistry chemistry chemistry chemistry chemistry
fgiga [73]

Explanation:

.chemistry

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemistr y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

.chemist r y

8 0
3 years ago
Read 2 more answers
Which diagram illustrates that matter is always conserved during a chemical reaction?
Alika [10]

Answer:

c

Explanation:

7 0
3 years ago
Read 2 more answers
What is the purpose of a salt bridge?
k0ka [10]

Answer:

A salt bridge refers to a device used to form an electrochemical cell by providing a means to support the free flow of ions between the oxidation and reduction half-cell components. A salt bridge facilitates corrosion because corrosive reactions typically occur in the presence of electrochemical cells.

Explanation:

5 0
2 years ago
Other questions:
  • The unit "troy ounce" is often used for precious metals such as gold (Au) and platinum (Pt) (1 troy ounce= 31.103 g). (a) A gold
    14·1 answer
  • Between acetic acid and sulphuric acid, which of their structure is more stable​
    11·2 answers
  • A catalyst:
    5·2 answers
  • The molality of a solution that is made by dissolving a certain mass of ethanol in 85.4 g of water is 0.950 m. How many moles of
    5·1 answer
  • Ch4 is a example of what<br>​
    13·2 answers
  • When ice is melting, the heat being added causes:
    9·2 answers
  • HELP !!! urgent
    13·1 answer
  • Just need help with this last question
    8·2 answers
  • Help me pls
    14·1 answer
  • Question<br> convert 70mi/hr into ft/s
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!