Ask question

Ask question

All categories

3 years ago

6

Which would you expect to freeze faster pure water or salt solution why?

1 answer:

krek1111 [17]3 years ago

6 0

Pure water.

A salt solution contains impurities whereas pure water will not contain any impurities.

Impurities increase the boiling point (freezing point) of a substance.

Thus, I would expect the pure water solution to freeze faster than the salt solution.

You might be interested in

At what wavelength would a star radiate the greatest amount of energy if the star has a surface temperature of 60,000 K?

kompoz [17]

Answer:

$\lambda=4.81\times 10^{-8}\ m$

Explanation:

We have,

The surface temperature of the star is 60,000 K

It is required to find the wavelength of a star that radiated greatest amount of energy. Wein's displacement law gives the relation between wavelength and temperature such that :

$\lambda T=2.89\times 10^{-3}$

Here,

$\lambda$ = wavelength

$\lambda=\dfrac{2.89\times 10^{-3}}{60000}\\\\\lambda=4.81\times 10^{-8}\ m$

So, the wavelength of the star is $4.81\times 10^{-8}\ m$ .

7 0

3 years ago

The thermal energy in a heat engine is used to move a piston. Which best describes why this is possible?

mestny [16]

The increase in entropy is directly related to the increase in temperature.

5 0

3 years ago

The <br> of a wave is the density of the medium’s particles at the compression of the wave.

andrew11 [14]

<span>Amplitude is the correct answer. I hope this helps.</span>

6 0

3 years ago

Read 2 more answers

Confidence intervals for the population mean μ and population proportion p _____ as the size of the sample increases.

Masja [62]

Answer:

becomes narrower

Explanation:

Confidence intervals for the population mean μ and population proportion p becomes narrower as the size of the sample increases.

As,the sample size increases,standard error decreases,so margin of error decreases and hence width of CI decreases.

6 0

3 years ago

A box of mass m is suspended by two ropes from a ceiling. if the ropes make the same angle with the vertical, what is the tensio

lilavasa [31]

The tension, T, in each rope is T= mg/2Sinθ

<h3>What is tension force?</h3>

Tension refers to the pulling force in a string which acts in an opposite direction to the force pulling on it.

The tension in each of the ropes are equal since they both make the same angle with the vertical.

Assume the angle the ropes make with the vertical are both θ.

Let the tension in each be T₁ and T₂

Also, T₁ = T₂ = T

T₁Sinθ + T₂Sinθ = mg

2TSinθ = mg

T = mg/2Sinθ

Therefore, the tension, T, in each rope is T = mg/2Sinθ

Learn more about tension at: brainly.com/question/14336853

#SPJ4

7 0

1 year ago