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Ipatiy [6.2K]
3 years ago
15

The US mail delivery considered a network true or false

Chemistry
1 answer:
Svetllana [295]3 years ago
6 0
True
Hope this helps!!❤️
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Use complete sentences to differentiate between acids and bases on the basis of touch. Give an example of each type. PLEASE HELP
aleksklad [387]

Explanation:

Bases have a slippery feel when touched but acids do not have a slippery feel.

  • An acid is a substance that interacts with water to produce excess hydroxonium ions, H₃O⁺ in an aqueous solution. Here are some of its properties:
  1. Their dilute solutions have a sour taste.
  2. They have a burning effect on the skin and are highly corrosive on metals.
  3. They have the ability to change the colors of indicators.
  4. They react with bases to form salt and water only.

Examples of acids are:

                Hydrochloric acid                  HCl

                Tetraoxosulphate (VI ) acid H₂SO₄

               

  • A base is a substance that interacts with water to produce excess hydroxide ions, OH⁻ in an aqueous solution.
  1. They typically have a bitter taste.
  2. They have a soapy feel
  3. They are electrolytes
  4. They also change the color of indicators

Examples are:

                Potassium hydroxide      KOH

                Sodium hydroxide           NaOH

Learn more:

Neutralization brainly.com/question/6447527

#learnwithBrainly

5 0
4 years ago
1. What is the density, in g/cm², of a substance weighing 22.2 cg with dimensions of 0.333
RUDIKE [14]
  • Mass=22.2cg=2.22g

Volume:-

\\ \tt\longmapsto 0.333(0.444)(0.555)=0.08cm^3

So

\\ \tt\longmapsto Density=\dfrac{Mass}{Volume}

\\ \tt\longmapsto Density=\dfrac{2.22}{0.08}=27.75g/cm^3

7 0
2 years ago
In developing his periodic table, Mendeleev listed on cards each element's name, atomic mass, and
forsale [732]
B I think is the answer
4 0
4 years ago
State and explain the trend in electron<br> affinity shown by halogens
velikii [3]
<h3>As fluorine sits atop chlorine in the periodic table, most people expect it to have the highest electron affinity, but this is not the case. ... Therefore, chlorine has a higher electron affinity than fluorine, and this orbital structure causes it to have the highest electron affinity of all of the elements.</h3>

6 0
3 years ago
All organic compounds contain ______, hydrogen, and usually oxygen. nitrogen. phosphorus. sulfur carbon.
Murrr4er [49]
Carbon is the answer. all hydrocarbures have to contain carbon.
4 0
3 years ago
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