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
Radda [10]
3 years ago
12

Mercury thermometers work because mercury ____ when it is warmed

Chemistry
1 answer:
kap26 [50]3 years ago
5 0
Mercury expands when it is heated. This process is called thermal expansion.
You might be interested in
The pressure of 5.00 L of gas increases from 1.50 atm to 1240 mmHg. What is the final volume of the gas, assuming constant tempe
Vsevolod [243]
(P1)(V1)=(P2)(V2)
(1.50)(5.00)=(1240/760)(V2)
(7.5)/(1240/760)=V2
V2=4.596774194 L
5 0
3 years ago
Read 2 more answers
What is oxidized in a galvanic cell with aluminum and gold electrodes ?
k0ka [10]

Answer:

Aluminum metal

Explanation:

In order to properly answer this or a similar question, we need to know some basic rules about galvanic cells and standard reduction potentials.

First of all, your strategy would be to find a trusted source or the table of standard reduction potentials. You would then need to find the half-equations for aluminum and gold reduction:

Al^{3+}+3e^-\rightarrow Al; E^o=-1.66 V

Au^{3+}+3e^-\rightarrow Au; E^o=1.50 V

Since we have a galvanic cell, the overall reaction is spontaneous. A spontaneous reaction indicates that the overall cell potential should be positive.

Since one half-equation should be an oxidation reaction (oxidation is loss of electrons) and one should be a reduction reaction (reduction is gain of electrons), one of these should be reversed.

Thinking simply, if the overall cell potential would be obtained by adding the two potentials, in order to acquite a positive number in the sum of potentials, we may only reverse the half-equation of aluminum (this would change the sign of E to positive):Al\rightarrow Al^{3+}+3e^-; E^o=1.66 V\\Au^{3+}+3e^-\rightarrow Au; E^o=1.50 V

Notice that the overall cell potential upon summing is:

E_{cell}=1.66 V + 1.50 V=3.16 V

Meaning we obey the law of galvanic cells.

Since oxidation is loss of electrons, notice that the loss of electrons takes place in the half-equation of aluminum: solid aluminum electrode loses 3 electrons to become aluminum cation.

6 0
2 years ago
Name the type of chemical reaction that occurs when magnesium chloride solution reacts with sodium carbonate solution
Svetlanka [38]

Answer:

precipitation reaction

8 0
3 years ago
Read 2 more answers
The population of worms in a garden ecosystem is decreasing. The population of birds will most likely _____.
Semenov [28]

Answer:

The population of birds would Decrease

Explanation:

A birds main source of food  include: Insects, worms, and grubs. Seeds, grasses, and plant material. Nectar and pollen

It also depends on what bird it is but with any species if there main source of food decrease then they decrease or move out of the area.

Hope this helps

3 0
2 years ago
What is the mass/volume percent of a solution containing 32.6g of CaCl2 in 375mL of water?
Jlenok [28]
The mass/volume percent of solution is 8.69% (m/v).
5 0
2 years ago
Other questions:
  • Which is one feature of the ocean floor found in the open ocean?
    11·2 answers
  • What holds combinations of atoms together in molecules? protons and electrons atomic magnetism chemical bonds nuclear forces?
    15·2 answers
  • Protons size and mass ?
    12·1 answer
  • A student collected a total of 36.04 g of water from a reaction. What number of moles of water does this represent
    12·1 answer
  • For the reaction 2H2O(g)↽−−⇀2H2(g)+O2(g) 2 H 2 O ( g ) ↽ − − ⇀ 2 H 2 ( g ) + O 2 ( g ) the equilibrium concentrations were found
    8·1 answer
  • What is the molarity of a 17.0% by mass solution of sodium acetate, NaC2H3O2 (82.0 g/mol), in water? The density of the solution
    15·1 answer
  • Scenario: You are testing two different
    14·2 answers
  • _ S8 +_02 +_ SO3
    14·1 answer
  • How many cobalt atoms are in 2 moles of cobalt?
    11·1 answer
  • Which atoms in the pair has the larger atomic radius ? Help please !!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!