Here is the three observation about copper.
<h3>What is copper?</h3>
copper (Cu), chemical element, a reddish, extremely ductile metal of the Group 11 (Ib) of the periodic table that is an unusually by its good conductor of to the electricity and heat. Copper of to the found in the free metallic state in nature. This is native copper was first by the used .
The reaction between to the copper carbonate and it is sulphuric acid will be a great neutralization reaction. Copper carbonate will acts like as a base, however, sulphuric acid is an acid. This reaction can also be the viewed as a double line displacement reaction too. By it's understand the nature of this reaction and what will be the final to product of this reaction.
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The quantity of electricity : 2 Faraday = 193000 Coulomb
<h3>Further explanation</h3>
Given
2 moles of electrons
Required
The quantity of electricity
Solution
According to Faraday, the amount of current flowing in the electrolysis cell is closely related to the amount of substance that reacts
1 Faraday is the amount of electricity that is passed in the electrolysis cell to obtain 1 mole of electrons. 1 mole of electrons is equivalent to an electric charge of 96500 Coulombs.
The conversion / relationship can be stated as follows:
1 Faraday = 1 mole of electrons = 96500 Coulombs
1 faraday = coulomb / 96500
Can be formulated
Coulomb = Q = I. t so:
so for 2 moles electrons :
= 2 x 96500 C
= 193000 C
= 2 Faraday
Answer:
None.
Explanation:
Magnets only pick up metal, so in that case the magnet will not pick up any.
Answer:
Option E
Explanation:
From the question we are told that:
Amount of sand in percentage 
Sample size
Note:After being dumped in the river repeatedly the sugar melts away leaving behind the insoluble sand
Generally the equation for Amount of sand content is mathematically given by
Therefore
After drying, the mass of the contents of the bag equals
Option E
Answer:
Electric current
Hydrogen and oxygen gas
Explanation:
Electrolysis is defined as a method of separation whereby an electric current is introduced into compounds to separate them . The electric current used here is a direct electric current (DC) and it makes the compound to be spit into its' component elements.
Now, in the case of water like it says in the question. Water is a mixture of hydrogen and oxygen gas. Thus, when electric current is passed through water which has an Electrolyte, it makes the water to decompose into its compound elements which are hydrogen and oxygen.
