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ad-work [718]
3 years ago
15

If I have a chemical with a 9 on the pH scale, is it safe to handle with the same gloves as I’ve handled fire with??

Chemistry
1 answer:
Ede4ka [16]3 years ago
7 0
Yes, I believe so, because if you are handling fire you have protective gloves on and you need protective gloves while handling bases because most of them are really bad for your skin.
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The Earth's bioshere consist of the parts of Earth where life exists. Ecosystems.

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Which pair of elements can form ionic bonds?
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Answer:

E.  potassium (K) and bromine (Br)

Explanation:

An ionic bond is formed between compounds with a large electronegativity difference between them. It is usually between a metal and non-metal.

  • Potassium is a true metal found in group 1 on the periodic table.
  • Bromine is a highly electronegative non-metal which is a halogen.
  • Potassium will lose one of its electrons which will be gained by the Bromine.
  • The electrostatic attraction between the two species will cause the ionic bond to form.
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3 years ago
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The following conditions must be met before a standard calibration curve equation can be used to solve for the concentration of
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Answer:

The same instrument must be used to measure the unknown solution as was used to measure the known (standard) solutions that were used to create the calibration curve.

The analyte in the unknown solution must be the same analyte (or type of analyte) that is present in the known (standard) solutions that were used to create the calibration curve.

Domain and range restrictions must be observed.

Explanation:

Calibration curves are tools necessary in understanding the instrumental response for any analyte.

A calibration curve is obtained by preparing a set of  standard solutions with known concentrations of the analyte. The instrument response for each concentration is measured  and plotted against the concentration of the standard solution. The linear portion of this plot may be used to determine the unknown concentration of a sample of the analyte.  

The equation of the best-fit line is  used to determine the concentration of the unknown sample.

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