Can you explain why waters change from solid to liquid to gas is reversible?

1 answer:

6 0

When solid ice gains heat, it changes state from solid ice to liquid water in a process called melting. Ice cubes in a cold drink, for example, gradually melt.When water absorbs enough heat, it becomes a gas (water vapor). This process is called evaporation.

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Why should you be careful when you heat your NaCl solution to evaporate the water?

ivolga24 [154]

Answer & Explanation:

If we heat the NaCl solution strongly, it boils and moves vigorously causing some of the solution to get out of the container.

This will cause loss of NaCl in the amount that get out of the container.

So, this affect the yield of the obtained NaCl after water evaporation.

7 0

3 years ago

A rock-climbing group reached the top of Mount Everest in the Himalayan mountains. Mount Everest is about 29,000 feet above sea

erastova [34]

Answer:

Explanation:

5 0

3 years ago

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Given the two half-cell reactions for copper and iron below

liraira [26]

Answer:

No, i will not use a water pipe consisting of the two metals

Explanation:

Looking at the reduction potential of the both metals, it is clear that an electrochemical cell is set up with iron as the anode and copper as the cathode.

This will make the iron to quickly corrode and eventually destroy the water pipe. It is better to have a set up in which another metal that is higher than iron in the electrochemical series is combined with it.

6 0

3 years ago

What volume of carbon dioxide (CO2) will be produced if 2.90 moles of it on (Fe) is produced?

dolphi86 [110]

Answer:

= 97.44 Liters at S.T.P

Explanation:

The reaction between Iron (iii) oxide and Carbon monoxide is given by the equation;

Fe2O3(s)+ 3CO(g) → 3CO2(g) + 2Fe(s)

From the reaction when the reactants react, 2 moles of Fe and 3 moles of CO2 are produced.

Therefore; Mole ratio of Iron : Carbon dioxide is 2:3

Thus; Moles of Carbon dioxide = (2.9/2)×3

= 4.35 moles

But; 1 mole of CO2 at s.t.p occupies 22.4 liters

Therefore;

Mass of CO2 = 22.4 × 4.35 Moles

= 97.44 L

6 0

3 years ago

Consider 100.0 g samples of two different compounds consisting only of carbon and oxygen. One compound contains 27.2 g of carbon

Pani-rosa [81]

Answer: The ratio of carbon in both the compounds is 1 : 2

Explanation:

Law of multiple proportions states that when two elements combine to form two or more compounds in more than one proportion. The mass of one element that combine with a given mass of the other element are present in the ratios of small whole number. For Example: $Cu_2O\text{ and }CuO$