All categories

3 years ago

Which colligative property is employed when salt is put on an icy sidewalk to melt ice?

2 answers:

6 0

For this number, we are to determine the colligative property that is affected by the addition of salt in the sidewalk in order to melt the ice. The answer is that the colligative property being displayed is the freezing point depression. Colligative properties are innate properties of substances and are only dependent on the amount of substance being added.

ankoles [38]3 years ago

4 0

The correct answer is 'freezing point depression'. Colligative properties depend on the concentration of molecules of a solute. Examples of other colligative properties are boiling point elevation or vapour pressure lowering. The salt causes ice on the side walk to melt because it lowers the freezing point.

You might be interested in

Does anyone wanna talk about astrology? ya know zodiac sighns? imma capricorn

pychu [463]

Answer:

the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs and the natural world

Explanation:

4 0

3 years ago

Read 2 more answers

C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion

dezoksy [38]

Answer:

$\Delta H_{comb}=2043.85kJ/mol$

Explanation:

Hello there!

In this case, according to the given chemical reaction, it possible for us to set up the expression for the calculation of the enthalpy change as shown below:

$\Delta H_r=-\Delta H_{comb}=3\Delta _fH_{CO_2}+4\Delta _fH_{H_2O}-\Delta _fH_{C_3H_8}-3\Delta _fH_{O_2}$

Thus, given the values of the enthalpies of formation on the attached file, we obtain: $-\Delta H_{comb}=3(-393.5kJ/mol)+4(-241.8kJ/mol)-(-103.85kJ/mol)-3(0kJ/mol)\\\\-\Delta H_{comb}=-2043.85kJ/mol\\\\\Delta H_{comb}=2043.85kJ/mol$

Best regards!

8 0

2 years ago

How does temperature affect winds all over the globe?

olga2289 [7]

Answer:

The differences in atmospheric pressure generate winds.

Explanation:

At the Equator, the sun warms the water and land more than it does the rest of the world. Warm equatorial air rises higher into the atmospher and migrates towards the poles. The complex relationships between fronts cause different types of winds and weather patterns.

I hope this helps :)

8 0

2 years ago

What kind of chemical bond holds each oxygen atom to the phosphorus atom

MAXImum [283]

This I believe would be double covalent bonds

8 0

2 years ago

A bond where electrons are transferred from a cation to an anion is called a (n) ___________bond.\

emmasim [6.3K]

When elements transfer electrons from a cation and an anion it called ionic bond.

6 0

3 years ago