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joja [24]
4 years ago
15

Two chemical samples were heated individually in a flame and both produced an identical orange flame. What conclusion can you dr

aw from this experiment?
Chemistry
1 answer:
cestrela7 [59]4 years ago
6 0

Answer: they both contain the same metal(calcium)

Explanation: calcium burns with a characteristic orange color.

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A calibration curve relating absorbance(y) to concentration (x, measured in mol/L) of y= 0.36x-0.011 Use the calibration curve t
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Answer:

The concentration is 0.025 M.

Explanation:

We will use beer law to find the concentration.

A = εmCl

This law relate to the linear equation Y = mx + b in following way,

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m = εm = slope or extinction coefficient in beer law.

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and l is length which is 1 cm

Thus equation can be written as,

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in order to find the concentration we will abstract the intercept from absorbance and then divide it by the slop.

0.02 - 0.011 / 0.36 = c

c =0.009

c = 0.025 M.

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3 years ago
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Each element has unique physical properties such as density, melting point, boiling point, etc. These properties can be used to identify an element using a reference book that contains such information about each element. Flame tests, atomic spectra, and spectroscopy can be used to identify some elements.

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