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Wewaii [24]
3 years ago
8

What is the best reason for a student to remove a dangling bracelet when heating test tubes of acidic solutions in a hot-water b

ath in a chemistry lab?
Chemistry
2 answers:
allsm [11]3 years ago
8 0
So it doesnt touch and create a negative reaction

Evgen [1.6K]3 years ago
4 0

Explanation:

When we perform any experiment then it is advised to strictly follow the instruction in order to avoid any accident or mishappening in the laboratory.

Hence, when heating a test tube it is safe to remove the dangling bracelet because it is possible that the bracelet might pull over the test tube.

And, this may lead to spilling the reagent or acid present in the test tube.

Therefore, it may cause an accident in laboratory.

That is why, it is advised to remove a dangling bracelet when heating test tubes of acidic solutions in a hot-water bath in a chemistry lab.

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Cual es el carbono de valencia libre
Ilia_Sergeevich [38]

Answer:

Explanation:

1) Se escoge la cadena con el mayor número de átomos de carbono. 2) Cuando hay dos cadenas posibles con el mismo número de átomos de carbono, se elige la que contenga el mayor número de triples ligaduras posibles. ... El átomo de carbono con la triple valencia libre se numera como 1.

8 0
3 years ago
Read 2 more answers
In the writing of ionic chemical formulas, what factor is "crossed over" in the crossover rule?
Levart [38]

Ionic compounds are formed by the complete transfer of electrons between the atoms.  The atom which gains electron(s) forms anion whereas loss of electron(s) results in the formation of cation.  They are bonded to each other by electrostatic force of attraction between the negatively and positively charged atoms.


While writing the ionic chemical formula for binary ionic compound the rules are:

  • Writing the chemical symbol of the metals and non-metals involved in the compound formation.
  • The charge i.e. the absolute value of oxidation number of each metal is written on respective atoms.
  • The charge i.e. the absolute value of oxidation number are cross-multiplied that is the charge of first ion becomes the subscript of second ion and vice versa.

Hence, in the writing of ionic chemical formulas, the value of each ion's charge is "crossed over" in the crossover rule.

5 0
3 years ago
Describing the Rock Cycle
Alex17521 [72]

Answer:

A, C, and D

Explanation:

A-Any type of rock can change into any other type of rock by weathering and erosion.

C-Rocks change slowly over time.

D- The rock cycle shows how the three rock types relate to one another.

Its correct on edge

6 0
4 years ago
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netineya [11]

Answer:

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8 0
3 years ago
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What would you do if a bunsen burner caught fire at the base of the burner, by the flame adjusting valve?
Andre45 [30]

We should Turn off the Bunsen burner, move away any other combustible materials, Smother the fire with a watch glass or damp cloth and notify the teacher immediately.

The use of Bunsen burners poses a fire risk. They generate an open flame and burn at a high temperature, which increases the risk of an accident. It is crucial that the following rules are followed for everyone working in a laboratory's safety and convenience. In the event of a fire, sound the nearest fire alarm pull station, alert all lab staff, and leave the area immediately.

Learn more about Bunsen burner here-

brainly.com/question/743920

#SPJ4

5 0
2 years ago
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