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Y_Kistochka [10]
3 years ago
8

What happens to the molecules in a glass of water as the water evaporates?

Mathematics
2 answers:
neonofarm [45]3 years ago
4 0
It is evaporating into a gas, and they will move faster
Ulleksa [173]3 years ago
3 0

Answer:

They move faster.

Step-by-step explanation:

Given that water evaporates in a glass of water.

We have to find the reaction of the molecules of water.

Whenever evaporation happens to liquid substance water, the liquid is converted into gas.  So when water evaporates, the molecules start to move quickly so that they escape into the atmosphere as molecules of water vapour.

Hence answer b) they move faster is right.

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The variable y is directly proportional to the variable x. If y = 32 when x = 20, what is the value of x when y = 40?
elena55 [62]

Answer:

The Correct option is C ) 25

Therefore the value of x is 25 when y =40.

Step-by-step explanation:

Given:

Variable 'y' is directly proportional to the variable 'x'.

\therefore y=kx     ......Direct Variation

Where,

k = Constant of proportionality

To Find:

value of x = ? when y = 40

Solution:

First we need to find Constant of proportionality

When x = 20 and y = 32

Substituting the values we get

32=k\times 20\\k=\dfrac{32}{20}=1.6\\\\k=1.6

Now when k =1.6 , y = 40 then x will be

40=1.6\times x\\\\x=\dfrac{40}{1.6}=25\\\\x=25

Therefore the value of x is 25 when y =40.

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Step-by-step explanation:

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Step-by-step explanation:

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