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lesya692 [45]
3 years ago
11

Water is initially present in a state where it’s molecules are far apart. During a change of state ,it’s molecules slow down. Wh

ich change of state has most likely taken place?
Chemistry
1 answer:
dalvyx [7]3 years ago
8 0

Answer:

Gas ⟶ liquid (condensation)  

Explanation:

If the molecules are far apart, they are in the gas phase.

As the temperature drops, the molecules lose kinetic energy.

They can no longer escape the attractive forces between them and their neighbours, so they stick together and form a liquid.

The most likely change of state is gas ⟶ liquid (condensation).

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A chemist must dilute 61.9 mL of 548. nM aqueous sodium carbonate (Na2CO3) solution until the concentration falls to 484. nM . H
maw [93]

Answer:

The final volume will be "70.08 mL".

Explanation:

The given values are:

Molar mass,

M1 = 548 nM

or,

     = 5.48\times 10^{-7} \ M

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or,

      = 4.84\times 10^{-7} \ M  

Volume,

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V1 = ?

By using the expression, we get

⇒ M1\times V1=M2\times V2

or,

⇒            V2=\frac{M1\times V1}{M2}

By substituting the values, we get

                    =\frac{5.48\times 10^{-7}\times 61.9}{4.84\times 10^{-7}}

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                    =70.08 \ mL

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Answer:

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