3 years ago

Whay does a solid change into liquidonheating? Expalin in brief

1 answer:

5 0

Answer:

It changes into a liquid because when it gets heated up to a certain temperature, it reaches it's "boiling point", which is when it will start to transform into a liquid because the temperature is too hot for it to remain a solid.

Explanation:

Just think of when icicles melt because of the sun. The sun is heating them up and it gets too warm to the point that it liquidizes.

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Ice cream is made by freezing a liquid mixture that, as a first approximation, can be considered a solution of sucrose in water.

hjlf

Answer:

Freezing point is -2.81°C

Explanation:

34g/342gmol^-1 = 0.0994mol

n = m/mr

Molarity= 0.994/ 0.66 = 1.51M

◇T = -i × m ×Kf

Where ◇T is freezing depression

i= Vant Hoff factor

m = molarity

Kf = freezing content = 1.

860kgmol^-1

◇T =-1 × 1.51 × 1.860 = - 2.81°C

6 0

3 years ago

Calculate the frequency of electromagnetic wave with the wave length 344nm ( hint: use dimensional analysis)

Svetlanka [38]

Frequency = speed of light
---------------------------
wavelength

= 3 x 10^8
------------------------
344 x 10^-9

= 8.72 x 10^14 Hz.

Hope this helps!