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
stealth61 [152]
2 years ago
9

What is a scanning tunneling microscope?

Chemistry
1 answer:
Crank2 years ago
7 0
A. Used for imaging surfaces at atomic level
You might be interested in
The standard cell potential Ec for the reduction of silver ions with elemental copper is 0.46V at 25 degrees celsius. calculate
Cloud [144]

Answer : The \Delta G for this reaction is, -88780 J/mole.

Solution :

The balanced cell reaction will be,  

Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)

Here, magnesium (Cu) undergoes oxidation by loss of electrons, thus act as anode. silver (Ag) undergoes reduction by gain of electrons and thus act as cathode.

The half oxidation-reduction reaction will be :

Oxidation : Cu\rightarrow Cu^{2+}+2e^-

Reduction : 2Ag^++2e^-\rightarrow 2Ag

Now we have to calculate the Gibbs free energy.

Formula used :

\Delta G^o=-nFE^o

where,

\Delta G^o = Gibbs free energy = ?

n = number of electrons to balance the reaction = 2

F = Faraday constant = 96500 C/mole

E^o = standard e.m.f of cell = 0.46 V

Now put all the given values in this formula, we get the Gibbs free energy.

\Delta G^o=-(2\times 96500\times 0.46)=-88780J/mole

Therefore, the \Delta G for this reaction is, -88780 J/mole.

7 0
3 years ago
(06.01 MC)
skelet666 [1.2K]

Answer:

Part 1. When the balloon is filled half of the way, and placed into the freezer, it will shrink. This happens because kinetic molecular theory tells us that a decrease in temperature decreases the kinetic energy of the gas molecules in the balloon. Viscous gases like hydrogen are less likely to shrink.

Part 2. When the balloon is placed out in the hot sun, most likely the balloon will swell and grow. This happens because the kinetic energy of the gas molecules increases due to solar radiation transforming into heat energy and then transforming into kinetic energy. Sticky gases like neon are more likely to grow.

Explanation:

7 0
3 years ago
What is the relationship between concentration and rate of reaction?
grigory [225]
<h3><u>Answer;</u></h3>

Directly proportional

<h3><u>Explanation;</u></h3>
  • <em><u>Concentration is one of the factors that determine the rate of a reaction. Reaction rates increases with increase in the concentration of the reactants, which means they are directly proportional.</u></em>
  • An increase in the concentration of reactants produces more collisions and thus increasing the rate at which the reaction is taking place. Therefore, <u>Increasing the concentration of a reactant increases the frequency of collisions between reactants and will cause an increase in the rate of reaction.</u>
7 0
3 years ago
In the following neutralization reaction, which substance is the acid?
denis-greek [22]

Hydrochloric acid is a colorless, highly pungent solution of hydrogen chloride in water. It is a corrosive

5 0
3 years ago
Read 2 more answers
suppose you want to treat if a sample compound is ionic. you have these materials: the solid compound, a glass container, a spoo
xz_007 [3.2K]
An ionic compound is a substance that contains atoms that are bonded together through an ionic bond, where electrons are transferred from one atom to another. For the given experiment above, the material that is missing from the list is WATER or solvent. It is necessary because conduction through water will help you identify if a sample compound is ionic through its electrolytes. <span>Ionic compounds that are soluble are typically electrolytes</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Treatment of 2-hexanone with naoch2ch3 followed by ch3br affords compound x (c7h14o) as the major product. x shows a strong abso
    13·1 answer
  • During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and th
    7·1 answer
  • If the pressure of a sample of gas is doubled at constant temperature, what happens to the volume of the gas?
    10·2 answers
  • How many Na ions are in 2.7 g of NaCl?<br> Answer in units of ions.
    9·1 answer
  • The complete orbital notation diagram of an atom is shown.
    7·1 answer
  • What effects does hemlock have on victim?
    10·1 answer
  • What is the value of k for this aqueous reaction at 298 k?
    15·1 answer
  • Why does the sun appear to be the brightest star in the sky?
    13·2 answers
  • It's science pls help ​
    14·1 answer
  • How many atoms of each element are in the chemical formula NH4NO2?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!