Uldilges of State

Chemistry

1 answer:

Harman [31]3 years ago

3 0

Answer:

Explanation:

Evaporation is a phase change from liquid to vapor. The right equation must show this change.

During evaporation, liquid acquires more heat energy and changes to gaseous form. In such processes, the molecules of the liquid break lose and becomes gases that are randomized.

H₂O $_{(l)}$ → H₂O $_{(g)}$

The expression above clearly shows water going from liquid to solid.

This should help to have a glimpse of how to solve this problem since the options are poorly written.

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What are two different types of electron microscopes and how might their ability to observe a specimen he different?

Sunny_sXe [5.5K]

Answer:

transmission EM (TEM) and the scanning EM (SEM)

Explanation:

Electron microscopy (EM) is a technique for obtaining high resolution images of biological and non-biological samples. It is used in biomedical research to examine the detailed structure of tissues, cells, organs and gross cell bodies.

There are two main type of electron microscope

the transmission EM (TEM)
the scanning EM (SEM)

Transmission electron microscopes are used to see thin specimens so that electrons can produce a projection image. TEM can be adapted in many ways to conventional (compound) light microscopes.
TEM is used for the internalization of cells , the formation of protein molecules, viruses, and organization of molecules in the cytoskeletal filaments. And arrangement of protein molecules in cell membranes.

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3 years ago

Why don’t these gases tend to form chemical bonds?

erik [133]

If you’re talking about noble gases, the answer would be A. Since noble gases already have 8 electrons, they don’t tend to form chemical bonds. And elements need just 8 electrons on there shells to be stable.

6 0

3 years ago

Monochloroacetic acid (HC2H2ClO2) is a skin irritant that is used in "chemical peels" intended to remove the top layer of dead s

yaroslaw [1]

Answer: The pH of the solution is 1.703

Explanation:

We are given:

Concentration of monochloroacetic acid = 0.31 M

The chemical equation for the dissociation of monochloroacetic acid follows:

$HC_2H_2ClO_2\rightleftharpoons H^++C_2H_2ClO_2^-$