In the decomposition of water, why is twice as much hydrogen as oxygen formed?(1 point)

Chemistry

1 answer:

Ugo [173]2 years ago

5 0

Answer:

1. Which statement correctly describes the classification of chemical reactions into different categories?

-Not all reactions fit into a category, and some reactions can fit into more than one category.

2. In a synthesis reaction, two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2) to produce sodium chloride (NaCl). How many molecules of sodium chloride are produced?

-Two

3. In the decomposition of water, why is twice as much hydrogen as oxygen formed?

- There are two atoms of hydrogen and one atom of oxygen in a water molecule.

4. Which component is transferred between substances in an oxygen-reduction reaction?

-Electrons

5. In a chemical reaction, substance A transfers electrons to substance B. Which statement is correct?

-Substance B is reduced and acts as the oxidizing agent.

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Is a solution in which (OH) = 1.0 10-1M acidic, basic, or neutral?

astra-53 [7]

Answer:

The pH is 13,00 and the solution is basic.

Explanation:

The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and higher than 7 to 14 basic. It is calculated as

pH = -log (H 30+)

Both pH and pOH have a relationship to belonging to the same aqueous solution: the expression of the Kwater (ionic product of the water Kw) is used:

[H3O ^ +]x [OH ^ -] = 1x 10 ^ -14

[H3O ^ +]x [1.0 10-1]=1x 10 ^ -14

[H3O ^ +]= 1x 10 ^ -14/1.0 10-1M= 1.0 10-13 M

pH = -log (H 30+)= -log (1.0 10-13 M)= 13, 00

As the pH value is higher than 7, it corresponds to a basic substance.

5 0

3 years ago

Identify the parts of the atom that are labeled in the diagram

baherus [9]

Answer:

A- Nucleus

B-Energy levels

Explanation:

An atom refers to the smallest particle of an element that can take part in a chemical reaction.
An atom is made up of two major parts namely; the nucleus and the energy shell or energy levels.
The nucleus of an atom contains the sub atomic particles, protons and neutrons while the energy shells contain the sub atomic particle electrons.
It is important to note that the protons in the nucleus are positively charged which makes the nucleus to be positively charged.
On the other hand, energy shells are negatively charged because of the negative charge of the electrons.

6 0

3 years ago

Read 2 more answers

Which one of the following exhibits dipole-dipole attraction between molecules?

Maslowich

Answer: No one. All these molecules are nonpolar.

Explanation: Dipole-dipole attractions occur only between polar molecules. To know if a molecule is polar, you have to observe if their dipole moment (μ) is different from 0. You can do this by observing the vectors of charge in each molecule.

In all the molecules of the alternatives, the overall molecule is nonpolar (the sum of the vectors is equal to 0). So, these molecules are attracted only by induced dipole forces (weak forces that exist between nonpolar molecules).

For F2, this molecule is nonpolar because is composed of equal atoms. So, there isn't an atom which pulls the charge for itself.