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AnnZ [28]
3 years ago
11

To what category of elements does an element belong if it's a poor conductor of electricity

Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
7 0

Answer:

I would assume NON-METALS

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Identify the NMR term that corresponds to each description.
balandron [24]

Answer:

A- upfield

B- down field

C- splitting

D- chemical shift

E- integration

Explanation:

NMR is a spectroscopic technique commonly used to observe the magnetic fields around the nucleus of atoms in a compound under investigation.

A chemical shift is the difference in parts per million (ppm) between the resonance frequency of the observed protons in the compound under study and that of the tetramethylsilane (TMS) (the reference compound in NMR with a chemical shift of zero ppm because all protons in the compound are equivalent).

If signals appear close to the reference signal, the signals are said to appear upfield. If the signals appear far away from the reference, they are said to appear down field.

The presence of protons cause splitting of peaks to the magnitude of n+1. n is the number of neighboring protons. Splitting refers to the appearance of multiple peaks for a single nucleus due to neighboring nuclei.

The area of a signal that corresponds to the number of nuclei at that frequency is called the integration.

4 0
3 years ago
Some commercially available algaecides for swimming pools claim to contain 7% copper. Could the method used in this experiment t
AleksandrR [38]

Answer:

Explanation:

  1. 7% copper implies 7 w/v%(weight/volume %) of copper. This implies a 100 mL algaecide arrangement contains 7 grams of copper.  
  2. Henceforth we have a thought of the measure of copper that ought to be available in a given example of algaecide.  
  3. Indeed, even a 1 mL algaecide test is sufficient to discover the percentage of copper in it.  
  4. so a 25mL sample of algaecide must have around 1.75g of copper.
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Select all of the answers that apply. what are the two main ingredients in air? oxygen carbon dioxide nitrogen helium hydrogen
RSB [31]
Carbon dioxide and nitrogen
8 0
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What dose it mean to say that mass is conserved during a physical change?
pentagon [3]
<span> <span>It means that the amount of mass will stay the same after the change occurs.</span></span>
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Pls help need it now as I don't know the answer
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Answer:

Iron :)))))))))))))))))))))))))

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3 years ago
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