Why are thermometers filled with alcohol instead for water?

2 answers:

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.

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A molecule that forms when atoms of the same element bond together is called a(n)________

Mice21 [21]

Answer: element.

Justification:

1) A molecule is the union of two or more atoms.

2) When two or more atoms of different elements bond together, the molecule formed is a compound.

For example: one atoms of hydrogen and one atom of chlorine form the molecule HCl, which is a compound (hydrogen chloride).

3) When the molecules is formed by two atoms of the same element, it is not called a compound, but element. Some examples of this are the diatomic gases:

H₂: hydrogen

Cl₂: chlorine

Br₂: bromine

O₂: oxygen

S₂: sulfur

N₂: nitrogen.

3 0

2 years ago

Read 2 more answers

Write the net ionic equation for the reaction of aqueous solutions of ammonium chloride and iron(III) hydroxide.

vagabundo [1.1K]

Answer:

$Fe(OH)_3(s)\rightarrow Fe^{3+}(aq)+3OH^-(aq)$

Explanation:

Hello.

In this case, for the reaction between aqueous solutions of ammonium chloride and iron (III) hydroxide, we have the following complete molecular reaction:

$3NH_4Cl(aq)+Fe(OH)_3(s)\rightarrow 3NH_4OH+FeCl_3$

And the full ionic equation, taking into account that the iron (III) hydroxide cannot be dissolved as it is insoluble in water:

$3NH_4^+(aq)+3Cl^-(aq)+Fe(OH)_3(s)\rightarrow 3NH_4^+(aq)+3OH^-(aq)+Fe^{3+}(aq)+3Cl^-(aq)$

Finally, the net ionic equation, considering that spectator ions are NH₄⁺, Cl⁻ as they are both the left and right side, therefore, the net ionic equation is:

$Fe(OH)_3(s)\rightarrow Fe^{3+}(aq)+3OH^-(aq)$

Best regards.

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2 years ago

What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?

Mama L [17]

Answer:

C: $\frac{6 mol}{2 L}$