All categories

3 years ago

When a galvanic cell is comprised of an anode and a cathode of precisely the same material, this is called a(n):

Chemistry

1 answer:

Cloud [144]3 years ago

3 0

Answer:

Concentration cell

Explanation:

Galvanic cells and even electrolytic cells usually consist of two electrodes namely anode and cathode. These 2 electrodes can either be made of the same metals or different metals, and also an electrolyte whereby the two electrodes are immersed.

Now, in the case where the electrodes are made of the same metal, we call it a concentration cell because A concentration cell is a cell that consists of two half-cells that have the same electrodes, but yet differ in concentrations.

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The galvanic cell illustrated above generates a potential of +1.10V. For the construction of a second galvanic cell (not shown),

xxTIMURxx [149]

Answer:

The initial E° for the second cell is the same as for the first cell.

Explanation:

Because the overall chemical reaction that occurs in the cell does not change.

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3 years ago

Balanced chemical equations show:

lara31 [8.8K]

the products formed from the reaction

all of the above

4 0

3 years ago

What would be your reaction to a claim that a new element had been discovered, and it fit between tin (Sn) and antimony (Sb) in

Anton [14]

Answer:

As explained

Explanation:

My reaction will be positive and I will feel elated that a new elements has been discovered as this will be a modification of the earlier claim by berzelius and the likes that there are over 106 known elements ; Metal, Non Metals and Metalloids.

However, fitting the new discovered element in between Tin and antimony may be an issue, as the physical properties of the new elements has to be known, its melting point, metals or non metals as this is paramount to be able to classify the elements. if the elements fits in between tin and antimony, it is an indication that the elements is mot likely a metal or non-mental and may belong to group IVB or VB. Another issue is, the discoverer will have to create his own periodic table to be able to stand in with the discovery of Dimitriy Mendelev.

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4 years ago

When a solution of sodium lactate,

Marina CMI [18]

Answer:

Use the following answers for questions 1 - 2. (1984 - #8 & 9)

(A) A network solid with covalent bonding

(B) A molecular solid with zero dipole moment

(D) An ionic solid

(E) A metallic solid

1. Solid ethyl alcohol, C2H5OH (C)

2. Silicon dioxide, SiO2 (A)

Use these answers for questions 3-6 (1989 #11 – 14)

(A) hydrogen bonding (B) hybridization (C) ionic bonding

(D) resonance (E) van der Waals forces (London dispersion forces)

3. Is used to explain why iodine molecules are held together in the solid state (E)

4. Is used to explain why the boiling point of HF is greater than the boiling point of HBr (A)

5. Is used to explain the fact that the four bonds in methane are equivalent (B)

6. Is used to explain the fact that the carbon-to-carbon bonds in benzene, C6H6, are identical (D)

Use the following diagram for questions 7-8

(1989 - #49&51)

7. The normal boiling point of the substance

represented by the phase diagram above is

(A) -15 °C (B) -10 °C

(E) not determinable from the diagram

8. For the substance represented in the diagram,

which of the phases is most dense and which is

least dense at - 15 °C.

Most Dense Least Dense

(A) Solid Gas

(B) Solid Liquid

(D) Liquid Gas

(E) The diagram gives no information

4 0

3 years ago

Identify the numbers from the statements above as exact or measured. Sort these numbers into the proper categories.

elena-s [515]

Answer:

Here is a similar question ; Identify the numbers from the statements above as exact or measured Sort these numbers into the proper categories. 93 g of silver, One minute, 2.20 lb ,One kilogram ,27 miles ,One yard, 100 g of sterling silver ,60 s, 1gal ,3 ft Exact Measured

Explanation:

Exact number are known from scientific research that has been proven to be true and widely acceptable or are known from true definition. for example 0 degree celsius = 273k, 1atm = 101.325 kPa

while measured numbers are not widely acceptable, they are as a result of individual measurement and discretion. A may measure the mass of a stone to be 3.5g, another person B may measure the same stone and arrive at 3.4g.

exact numbers ; one minutes, One yard, One kilogram, 1gal, 3ft, 100g of sterling silver

measured numbers ; 93g of silver, 2.20 lb, 27 miles

3 0

3 years ago