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fredd [130]
3 years ago
8

While washing his hands before the client consultation with Chloe, Jayden dropped some water onto the countertop. When he came b

ack later to wipe it up, it has evaporated. What happened to the drops of water?
Chemistry
1 answer:
Anastaziya [24]3 years ago
3 0

Answer:

The water molecules turned into gas called<em> "water vapor"</em> and are now part of the air.

Explanation:

The "drops of water" are actually made up of<u> water molecules.</u> Under <em>heat,</em> they change their phase from liquid to gas. This means that the water molecules <em>move faster. </em>Such movement allows the molecules to escape into the atmosphere as gas. Such gaseous state of water is called "water vapor" <em>(transparent in color).</em>

The client consultation must have taken time that the drops of water evaporated when Jayden came back.

Aside from evaporation, water vapor may also be produced through the process called "sublimation." This happens when<em> ice directly turns into gas without becoming a liquid.</em>

So, this explains the answer.

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A piece of an unknown substance weighing 124.0 grams is heated in boiling water to 100.0oc. when the substance is placed in a ca
MakcuM [25]

The heat cause 300g water temperature increase from 20 to 26 celcius. The heat transferred would be: 300g * (26 °C -20 °C) *4.2 joule/gram °C= 7560J

The unknown substance is added to the water, so its final temperature should be the same as the water. The calculation would be:

7560J= 124g * (100-26)* specific heat

specific heat= 7560J / 124g / 74 °C= 0.8238 J/gram °C

3 0
3 years ago
Which is the best revision of this sentence?
taurus [48]
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3 0
3 years ago
A solution contains one or more of the following ions: Ag , Ca2 , and Co2 . Lithium bromide is added to the solution and no prec
koban [17]

Answer:

Ca^{2+}  and  Co^{2+}

Explanation:

Given:

A solution contains one or more of the following ions such as Ag, Ca_2 and Co_2

Here the Lithium bromide is added to the solution and no precipitate forms

Solution:

Since with LiBr no precipitation takes place therefore Ag+ is absent

Here on adding Li_2SO_4 to it precipitation takes place.

Precipitate is as follows,

Ca^{2+}(aq)+SO_4^2^-(aq)----->CASO_4(s)

Thus,

Ca^2^+ is present

When Li_3PO_4 is added again precipitation takes place.

Therefore the reaction is as follows,

Co^2^+(aq)+PO_4^3^-(aq)------>Co_3(PO_4)_2(s)

Therefore,

Ca^{2+}  and  Co^{2+} are present in the solution

3 0
3 years ago
I Need help ASAP!
8090 [49]

Answer:

The correct answers are:

• Softer, porous, or more permeable rocks weather faster than harder rocks.

• Rocks in warmer climates weather faster than rocks in colder climates.

• The more water present, the faster the rate of weathering.

Explanation:

Weathering is the process through which the surface minerals of rock are broken down and loosened. This occurs through the action of extreme temperatures, rainwater and biological activity.

Hope this helps- Good luck ^w

4 0
3 years ago
Read 2 more answers
Which of the following ions/atoms has the smallest radius?
Anna11 [10]

Answer:

B I believe im sorry if it's not right

8 0
2 years ago
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