CHEMISTRY HIGH SCHOOL

Which type of reaction occurs when nonmetal atoms become negative nonmetal ions?A. oxidation
B. reduction
C. substitution
D. condensation

Answers

Answer 1
Answer:

Answer: Option (B) is the correct answer.

Explanation:

When an atom gains electrons then it becomes rich in electrons and therefore it acquires a negative charge.

Also, it is known that a reduction reaction is a reaction in which an element gain electron(s).

For example, Br_(2) + 2e^(-) \rightarrow 2Br^(-) is a reduction reaction.

Thus, we can conclude that when nonmetal atoms become negative nonmetal ions then type of reaction which occurs is reduction reaction.
Answer 2
Answer: The answer is B. reduction. The atom becoming negative ions means it gains electrons. The reaction which gain electrons is reduction reaction. So the answer is B.

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'why is a slanted paper tube considered a ramp?'

Answers

The incline could help things go up the incline plane therefore you can say it is an inclined plane. Hope this helped

What element has 81 protons in the nuclei of its atoms? A. Platinum
B. Uranium
C. Lead
D. Thallium

Answers

Thallium has got 81 protons

Have a nice days.......

Thallium has 81 protons in the nuclei of its atoms.

Ethanol and dimethyl ether have different chemical and physical properties because they have different(1) functional groups
(2) molecular masses
(3) numbers of covalent bonds
(4) percent compositions by mass

Answers

The correct answer is option 1. Ethanol and dimethyl ether have different chemical and physical properties because they have different functional groups. Ethanol is an alcohol while the latter is an ether. They have different functional groups and different structures thus different properties.

The particles in a ____________________ have an orderly, fixed arrangement.

Answers

The particles in a solid have an orderly, fixed arrangement.

Egi calculate 0.2 mole of H₂0 into Volume​

Answers

Answer:

To calculate the volume of 0.2 moles of H₂O (water), we need to use the relationship between moles, volume, and molar concentration. The molar volume of a gas at standard conditions (0°C and 1 atm pressure) is approximately 22.4 liters/mol. However, since water is in liquid form, we'll need to consider its density to calculate the volume.

The molar mass of water (H₂O) is approximately 18.01528 g/mol.

Given:

Moles of H₂O = 0.2 moles

Molar mass of H₂O = 18.01528 g/mol

We can calculate the mass of 0.2 moles of H₂O:

Mass = Moles × Molar mass

Mass = 0.2 moles × 18.01528 g/mol = 3.603056 g

Now, let's convert the mass to volume using the density of water. The density of water at room temperature (around 20°C) is approximately 1 g/cm³.

Given:

Mass = 3.603056 g

Density of water = 1 g/cm³

Volume = Mass / Density

Volume = 3.603056 g / 1 g/cm³ = 3.603056 cm³

So, the volume of 0.2 moles of H₂O is approximately 3.603 cm³ at room temperature and pressure.

Explanation:

if a jar of honey sits for a long time, sugar may crystallize in the jar.describe two possible cause for this crystallization?

Answers

Answer:

Temperature and humidity

Explanation:

Crystallization occurs in super saturated solution. These are the solutions that have solute to solvent ratio of 2:1 or more. Typical honey is 70% sugar and 20% water (the solute concentration is too high).  

Two things cause honey to crystallize.

  1. Temperature
  2. Humidity level

If temperature is lowered the rate of crystallization increases. This is because at low temperature the molecules of solvent come closer and the space between them reduces. This causes the additional solute molecules to be pushed up to form crystals.  

Secondly, humidity also plays a key role. If the humidity reduces, the water molecules evaporates from honey into air. This increases the relative concentration of the solute inside the honey, which causes the honey to crystallize.  
The two possible causes for crystallization in honey is 1. The condition of the room. (if the temperature keeps rising and dropping rapidly) 2. Crystallization rate also depends on the type of honey you keep in your cabinet. There are 300 different kinds of honey and each type crystalizes differently
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