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
belka [17]
3 years ago
6

Two identical spoons are electroplated with Ag or Cd through the use of the electrolytic cells. A current of 5.00A was supplied

to each cell for 600. seconds, and the masses of the spoons before and after the electroplating were recorded. Write down the mathematical equations can best be used to account for the much larger increase in mass of the spoon electroplated with Ag compared with the spoon electroplated with Cd.
Chemistry
1 answer:
OLga [1]3 years ago
4 0

Answer:

Explanation:

One farad of charge is capable of depositing one gram equivalent of a metal

One gram equivalent of Ag = 108 grams

One gram equivalent of Cd = 112 / 2  grams

= 56 grams . [ for cadmium equivalent mass = atomic mass / s ]

electric charge flowing = current x time = 5 x 600 = 3000 coulomb

one farad = 96500 coulomb

96500 coulomb  deposits 108 gram of Ag

3000 coulomb deposits 108 x 3000 / 96500 gram

= 3.35 grams of Ag

Similarly ,

96500 coulomb  deposits 56 gram of Cd

3000 coulomb deposits 56 x 3000 / 96500 gram

= 1.74  grams of Cd

So there will be much larger increase in the spoon of Ag due to larger deposit of Ag by charge .

You might be interested in
How do computers play a role in meteorology? Select three options.
sergij07 [2.7K]

Answer:

It is the first 3

Explanation:

6 0
3 years ago
Read 2 more answers
Distillation is a method that depends on differences in the boiling points of liquids to separate the components of a liquid mix
ryzh [129]

Explanation:

for immiscible liquids it is quite easy to separate and the separating funnel can be used but for miscible liquid they form a single entity and separating them is quite impossible if the differences in temperature is not considered,so in distillation the one with lower boiling point evaporates out living behind the one with high boiling point

5 0
3 years ago
In a chemical equation, the symbol that means "dissolved in water" is _____. (s) (l) (aq) (g)
Paraphin [41]
In a chemical equation, the symbol that means “dissolved in water” is (aq).
8 0
3 years ago
Calculate the pH of a 0.010 M NaNO2 solution.
ryzh [129]

Answer:

Calculate the pH of 0.010 M HNO2 solution. The K, for HNO2 is 4.6 x 104

Answer: pH = 2.72

3 0
3 years ago
Select the single best answer. Explain the observed trend in the melting points for four isomers of molecular formula C7H16. mp
damaskus [11]

Answer:

The ability of the molecule to pack more tightly increases the melting point.

Explanation:

In hydrocarbons of same molecular formula, melting point is determined by:

  • weak intermolecular forces
  • Molecular symmetry

Higher the intermolecular forces and molecular symmetry, higher will be the melting point.

Intermolecular forces in hydrocarbons decreases with branching. Moreover, branching interfere the tight packing of the molecule in the crystal. Therefore, branched hydrocarbons tend to have lower melting point.

However, in highly branched hydrocarbons molecular symmetry increases which results in tight packing of the molecule in the crystal.

So, highly tight packed molecules tend to have high melting point.

As (CH3)2CHC(CH3)3 is highly branched and has high molecular symmetry, therefore, its melting point is highest among given.

So, among the given, option c is correct.

5 0
3 years ago
Other questions:
  • True or false the si in sih4 does not follow the octet rule because hydrogen is in an unusual oxidation stat
    6·1 answer
  • Which requires more energy to move an electron?
    11·2 answers
  • Which type of metal atoms affect the flame color ?
    8·1 answer
  • Which describes a spontaneous reaction?
    14·2 answers
  • 7. What is the total pressure of the following mixture of gases in a 20.0 L container at 298 K: 12.0 g He,
    5·1 answer
  • Please help me immediately I will mark you as brainiest.
    12·1 answer
  • What pressure will be exerted by 0.57 moles of CO2 at a temperature of 25°C and a volume of 500 ML? _____atm
    15·1 answer
  • When the concentration of A in the reaction A ..... B was changed from 1.20 M to 0.60 M, the half-life increased from 2.0 min to
    11·1 answer
  • How many atoms of Pb are there?
    14·1 answer
  • When the energy is removed what will happen to a gas?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!