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4 years ago

Are the particles in a solid motionless?

2 answers:

4 0

<span>No, they are just moving very slowly or vibrating in a closed space so that it makes the item solid. Hope I helped. :)</span>

BigorU [14]4 years ago

3 0

No, the atoms in the solid are just in such a confined space and chemically bonded so strongly that they vibrate very fast but isn't noticeable when you touch a solid, and a good example to this is when friction is created, a solid will melt, so when something is heated, it expands giving the atoms even more space to jump around in, and while they try to hold their bonds they end up tearing apart into a liquid. <span />

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The pH of a neutral solution is below 7 above 7 7 7.5

morpeh [17]

The pH scale ranges from 0 to 14 and goes from acidic to alkaline, where 7 - the center of the scale - is the most neutral.

Answer:
The pH of a neutral solution is exactly 7.

4 0

4 years ago

Plz I need help is the 2nd time I post this

pychu [463]

Answer:

2--->C

6---->E

3---->D

4--->A

5--->B

1---->F

Explanation:

I think so, sorry if its wrong.

8 0

3 years ago

How many moles are in 54.0 grams of Silver?

Lelechka [254]

54g ag *(108mol ag/1 g ag) =5832mol ag

4 0

4 years ago

Light brings many chemical changes. Can you think of any chemical change brought about by light?

strojnjashka [21]

Answer:

MRCORRECT has answered the question

Explanation:

Film photography is another example ofchemical reaction by light. In this example, the chemical compounds coated on the film go through a chemical reaction. ... These plates (usually made of aluminum) are coated with a photosensitive compound consisting of a polymer and a photosensitivechemical system.

4 0

4 years ago

A sailor on a trans-Pacific solo voyage notices one day that if he puts 735.mL of fresh water into a plastic cup weighing 25.0g,

Gennadij [26K]

Answer:

Amount of salt in 1 L seawater = 34 g

Explanation:

According to Archimedes' principle, mass of freshwater and cup = mass of equal volume of seawater

mass of freshwater = density * volume

1 cm³ = 1 mL

mass of freshwater = 0.999 g/cm³ * 735 cm³ = 734.265 g

mass of freshwater + cup = 734.265 + 25 = 759.265 g

Therefore, mass of equal volume of seawater = 759.265 g

Volume of seawater displaced = 735 mL = 0.735 L (assuming the cup volume is negligible)

1 liter = 1000 cm³ = 1000 mL;

Density of seawater = mass / volume

Density of seawater = 759.265 g / 0.735 L = 1033.01 g/L

Density of freshwater in g/L = 0.999 g/ (1/1000) L = 999 g/L

mass of 1 Liter seawater = 1033.01 g

mass of 1 Liter freshwater = 999 g

mass of salt dissolved in 1 L of seawater = 1033.01 g - 999 g = 34.01 g

Therefore, amount of salt in 1 L seawater = 34 g

4 0

3 years ago