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topjm [15]
3 years ago
5

How do chemists identify elements & compounds?

Chemistry
1 answer:
padilas [110]3 years ago
3 0
Chemsits identify elements and compounds by using the Periodic Table. All elements have Atomic Numbers, Chemical Names, Atomic Mass, Period, and are usually colored and put into their group.
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PLS HELP The average atomic mass of carbon is 12.01 amu. Based on the atomic
Masteriza [31]

Answer:

B. There is a very large percentage of C-12.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to realize that, since the average atomic mass is 12.01 amu, then the C-12, with an atomic mass of 12.000 am prevails over C-13 with an atomic mass of 13.003 amu as long as the average is nearer to the former.

In such a way, the answer will be B. There is a very large percentage of C-12.

Regards!

7 0
3 years ago
Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and
Marianna [84]

Answer:

4HCl(g) + O₂(g) →  2Cl₂(g) + 2H₂O(g)

Explanation:

In order to find the equation we should state:

The reactants → Hydrogen chloride (HCl) and oxygen (O₂)

The products → Chlorine gas (Cl₂) and water gas (H₂O)

The balanced equation is:

4HCl + O₂  →  2Cl₂ + 2H₂O

It is a redox reaction, where the oxygen reduces to make water, and the chloride is oxidized to produce elemental chlorine.

7 0
3 years ago
Read 2 more answers
Scientific knowledge is generally considered to have a positive effect on society. In which situation would scientific knowledge
avanturin [10]
D.
Misinterpretation of scientific knowledge for the influence of public opinion has been a repeating problem over the past, and usually creates a rift between the scientific community and the general public.
8 0
4 years ago
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In which of the pairs listed below are both compounds strong electrolytes? Are any strong acids or bases?
Ganezh [65]
<h3>Answer:</h3>

NaCl and Sr(OH)2

<h3>Explanation:</h3>
  • An electrolyte is a substance that is either in molten or aqueous form that can be decomposed by passing an electric current through it.
  • Electrolytes are classified as either strong electrolytes or weak electrolytes.
  • Strong electrolytes are either strong bases or acids which completely ionizes to give mobile ions which are responsible for conduction of electricity.
  • NaCl is a salt and Sr(OH)₂ is a strong base, both are strong electrolytes.
5 0
3 years ago
What is the purpose of a Lewis structure?
docker41 [41]

Answer:

A

Explanation:

in a lewis structure, it shows the connectivity of a molecule as well as how many and where the valence electrons are located.

6 0
3 years ago
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