1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hatshy [7]
3 years ago
11

Why are thermometers filled with alcohol instead for water?

Chemistry
2 answers:
love history [14]3 years ago
8 0
Hello. Most thermometers would use mercury, but some use alcohol thanks to its freezing points. Alcohol freezes at -114 Celsius, while water freezes at 0 Celsius. If it was freezing outside, the water would freeze too, making the thermometer useless.
PilotLPTM [1.2K]3 years ago
8 0
Most thermometers are filled with mercury, but some are filled with alcohol. The reason we use alcohol instead of water is that alcohol has a lower freezing point (-114°C) than water (0°C). 

Also, alcohol doesn't condensate on the top unlike water, which makes the reading of the thermometer easier to read.
You might be interested in
Give the number of lone pairs around the central atom and the molecular geometry of XeF4.A)0 lone pairs, tetrahedralB)1 lone pai
vovangra [49]

Answer: 2 lone pairs, square planar

Explanation:

Using the VSEPR ( Valence Shell Electron Pair Repulsion)Theory

To calculate the number of lone pairs electron can be done using the formula;

Number of electrons = ½ (V+N-C+A)

V mean valency of the central atom

N means number of monovalent bonding atoms

C means charge on cation

A means charges on anion

Therefore, to calculate the number of lone pair electron C=A=0;

Number of electrons = ½ (8+4) = 12/2 = 6

Number of bonding pair = 4

Number of lone pairs of electron = 6-4 = 2

The hybridrization of the compound is sp3d2 because the number of electrons around the central atom is 6.

The geometry of the compound is square planar and this is because of the repulsion between the bonding pair of electrons and lone pair of electrons which causes the lone pair of electrons to lie in a perpendicular plane in order to acquire stability.

4 0
3 years ago
How can you tell that a chemical change has occurred?
Alik [6]

A. The products of the change are different from the starting

substances.

<u>Explanation:</u>

Whenever there is a physical change it may just affect the phase change but the properties remains the same. Whenever there is an occurrence of a chemical change, it was indicated by some of these things such as,

  • The products are exactly different from the products.
  • Chemical properties of these reactants are entirely different from that of the products.
  • Chemical composition as well as the physical properties of the reactants and the products will change
5 0
3 years ago
What accounts for the large increase in volume when sugar burns?
Dimas [21]
I don’t know type it up yourself
8 0
3 years ago
For the titration of 25.00 mL of 0.150 M HCl with 0.250 M NaOH, calculate:
Leviafan [203]
1) Chemical reaction

HCl        +       NaOH      --->      NaCl + H2O

25.0 ml            
0.150 M            0.250M

2) 50% completion => 0.025 l * 0.150 M * (1/2) = 0.001875 mol HCl consumed and 0.001875 mol HCl in solution

0.001875 mol HCl => 0.001875 mol H(+)

Volume = Volume of HCl solution + Volumen of NaOH solution added

Volume of HCl solution = 0.0250 l

Volume of NaOH = n / M = 0.001875 mol / 0.250M = 0.0075 l

Total volume = 0.0250 l + 0.0075 l = 0.0325 l

[H+] = 0.001875 mol / 0.0325 l = 0.05769 M

pH = - log [H+] = - log (0.05769) = 1.23

Answer: 1.23

3) Equivalence point

0.02500 l * 0.150 M = 0.250M * V

=> V = 0.02500 * 0.150 / 0.250 = 0.015 l

4) 1.00 ml NaOH added beyond the equivalence point

1.00 ml * 1 l / 1000 ml * 0.250 M = 0.00025 mol NaOH in excess

0.00025 mol NaOH = 0.00025 mol OH-

Volume of the solution = 0.02500 l + 0.015 l + 1.00/1000 l = 0.041 l

[OH-] = 0.00025 mol / 0.041 l = 0.00610 M

pOH = - log (0.00610) = 2.21

pH + pOH = 14 => pH = 14 - pOH = 14 - 2.21 = 11.76

Answer: 11.76
6 0
3 years ago
Please help fast thanks
timurjin [86]

Answer:

I do not know if I am correct but I think it is the letter D I hope it helps you if it is correct pls brainliests

7 0
2 years ago
Other questions:
  • When your heart doesn't know what it wants.. what do you do?
    7·1 answer
  • How to find valence electrons?
    9·2 answers
  • Explain what is the difference<br> between the name of genus and the<br> name of species?
    11·2 answers
  • In a Lewis diagram for methane (CH4), which atom or atoms is inside, or central?
    10·2 answers
  • Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe
    7·2 answers
  • HELP
    15·1 answer
  • .What type of energy includes both kinetic and potential energy?
    11·2 answers
  • Classify the changes involved in the following processes as physical or chemical changes:
    8·1 answer
  • . A current through a horizontal powerline flows in west to east direction. What is the direction of magnetic field at a point,
    10·1 answer
  • Write a mechanism for the esterification of propanoic acid with 18O-labeled ethanol. Show clearly the fate of the 18O label. (b)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!