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Mrrafil [7]
3 years ago
15

Which describes the polarity in a water molecule?

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
6 0

Answer:

C

Explanation:

The two hydrogen atoms and one oxygen atom within water molecules form polar covalent bonds.

Water molecules do not have a net charge, but the polarity of water creates a slightly positive charge on hydrogen and a slightly negative charge on oxygen.

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A substance that gives up a proton during a chemical reaction, raising the hydrogen ion concentration of water, is most appropri
AleksandrR [38]

The answer is an acid.

That is a substance that gives up a proton during a chemical reaction, raising the hydrogen ion concentration of water, is most appropriately called an acid.

Acid is a substance that gives protons in its aqueous solution, and that the hydrogen ion concentration of that aqueous solution .

6 0
4 years ago
Read 2 more answers
Que relación tiene el metabolismo celular con el mantenimiento de los seres vivos
Dmitry [639]
El metabolismo es un proceso por el cual los seres vivos ganan masa y energía que ofrece el medio en el que viven y sirve para el mantenimiento, crecimiento y reproducción de estos.

Si tomamos en cuenta la clasificación de los seres vivos tenemos:

- Autótrofos: Crean su propio alimento por medio del sol o la tierra y no de otros seres vivos (plantas, vegetales y algas).

- Heterótrofos: Generan su propio alimento y dependen de los autótrofos o de otros heterótrofos para su alimentación (animales y algunas bacterias).

El metabolismo se divide en dos procesos conjugados, el catabolismo y el anabolismo. Estos procesos dependen el uno del otro.

Las reacciones catabólicas liberan energía, mientras que las reacciones anabólicas, utilizan esa energía liberada para recomponer enlaces químicos y construir componentes de las células como las proteínas y los ácidos nucleicos..

De esta manera se relacionan ambos
5 0
3 years ago
A gas has a mass of 3.82 g and occupies a volume of 0.854 L. The temperature in the laboratory is 302 K, and the air pressure is
4vir4ik [10]

m = given mass of gas = 3.82 g

M = molar mass of gas = ?

T = temperature of laboratory = 302 K

P = air pressure = 1.04 atm = 1.04 x 101325 pa

V = volume of gas = 0.854 L = 0.854 x 10⁻³ m³

using the ideal gas equation

PV = (m/M) RT

inserting the above values

(1.04 x 101325) (0.854 x 10⁻³) = (3.82/M) (8.314) (302)

M = 106.6 g

hence the molar mass of the gas comes out to be 106.6 g

3 0
3 years ago
Choose the catabolic reaction.
olga55 [171]

Answer:

B. Synthesizing a complex molecule

Explanation:

Hello!

In this case, since catabolic reactions are related to the synthesis of complex biomolecules and metabolic reactions to the breaking down of complex molecules to obtain energy from (say start), we infer that the appropriate answer is:

B. Synthesizing a complex molecule

Because regardless C. also mentions the synthesis of a compound, carbonic acid is not a complex one in comparison to the biomolecules we produce during our cellular cycles.

Best regards!

7 0
3 years ago
Chromium forms a crystalline solid with a body-centered cubic unit cell. The edge length of its unit cell is 291 pm. Calculate t
Vinvika [58]

Answer:

c. 7.01 g/cm³

Explanation:

To dinf density of the Chromium we need to find first the mass of the unit cell and then its volume.

A body-centered cubic unit cell has:

2 atoms per cubic unit cell.

Volume = Edge length³

<em>Mass of 2 atoms of Cr - Molar mass: 51.9961g/mol-:</em>

2 atoms Cr * (1mol / 6.022x10²³ atoms) = 3.321x10⁻²⁴ moles Cr * (51.9961g/mol) =

<h3>1.72687x10⁻²²g </h3><h3 />

<em>Volume:</em>

291pm = (291x10⁻¹²m)³= 2.4642x10⁻²⁹m³* (1cm³/1x10⁻⁶m³) =

<h3>2.4642x10⁻²³cm³</h3><h3 />

Density, ratio of mass and volume is:

Density: 1.72687x10⁻²²g / 2.4642x10⁻²³cm³ =

7.01g/cm³

Right option is:

<h3>c. 7.01 g/cm³</h3>
3 0
3 years ago
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