Substances that have a define size and shape and vibrating particles that are close together are called Solid.
Explanation:
There are three states of matter - solid, liquid and gas.
Lets talk about solid state in detail.
In solid particles are closely packed and so they have very less or no space to move which results in vibrating particles. This results in solid substances having a fixed shape and volume.
The particles have very little space in between them, so it is not easy to compress solid.
There is no free space for particles to slide over each other, which does not allow solids to flow.
Also, particles in solid have a regular arrangement, they are not randomly packed.
Answer:
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D) 36.2 mL of 0.1105 M NaOH solution
Explanation:
We have the following chemical reaction:
HCOOH + NaOH → HCOONa + H₂O
molar concentration = number of moles / volume (L)
number of moles = molar concentration × volume
number of moles of HCOOH = 0.2 × 20 = 4 mmoles
From the chemical reaction we see that 1 mmole of HCOOH will react with 1 mmole of NaOH so 4 mmoles of HCOOH will react with 4 mmoles of NaOH.
volume = number of moles / molar concentration
volume of NaOH solution = 4 / 0.1105 = 36.2 mL
Learn more about:
molar concentration
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At present, cosmologists expect the universe to <span>continue expanding indefinitely and probably heating up.</span>
