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Ostrovityanka [42]
3 years ago
11

Select all that apply.

Chemistry
1 answer:
MakcuM [25]3 years ago
8 0

Answer:

A telescope, printing press, and microscope

Explanation:

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This graduated cylinder has numbers representing milliliters. A student says that the volume of the liquid inside is 21.8 millil
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Is a cube of salt being crushed before being stirred into water a physical or chemical change
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3 years ago
Briefly discuss interpretations of your observations and results. Include in your discussion, any conclusions drawn from the res
VMariaS [17]

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In comparison to Part 1 of this experiment, we observed similar reactions when determining the make up of our unknown. When testing for Mn2+ we observed a color change that resulted in a darker brown/red color, when testing for Co2+ we observed the formation of foamy bubbles but we could not conclude that a gas had formed, when testing for Fe3+ the result was a liquid red in color, when testing for Cr3+ we observed no change, when testing for Zn2+ we observed the formation of a pink/red liquid, when testing for K+ we observed the formation of a precipitate, when testing for Ca2+ we observe the formation of a precipitate. Sources of error may have occurred when observing whether or not an actual reaction had taken place or not, using glassware that wasn't fully cleaned, or the accidental mix of various other liquids in the lab

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