Answer:
A neutral atom can become positively charged by loosing electrons
Explanation:
this is because the number of protons are the same as the number of electrons and so by loosing electrons there are now more protons and so they become positively charged
Answer:
b
Explanation:
losing electrons,the atom becomes a cation ,,in other words becomes positively charged
The amount of aluminum deposited when a current of 10A is passed through a solution of aluminum salt for 1930s is 5.4 g.
An electrochemical cell converts chemical energy into electrical energy. Metals with higher negative electrode potential undergo oxidation and its ionization produces electron flow through the solution.
The weight of the metal that deposited by reduction is related to the mass of metal, current passed and time as follows:
w = z It
where z = E/96500 F
Equivalent mass of Al, E = 27 g
t = 1930 s
current I = 10 A.
Now, the weight of aluminum metal deposited is calculated as follows:
w = 1930 s × 10 A × 27/96500 = 5.4 g.
Therefore, the weight of Al deposited on the electrode is 5.4 g.
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Answer:
AL*3+ + 3e- =AL.
(10A×1930)÷96500=0.2mole e-
0.2÷3×27=1.8g(AL)
Answer:
the cell will either
Explanation:
0.23 mol
Ob
0.38 mol
0.28 mol
Od
0.47 mol
Answer:
0.23 mol
Explanation:
kingdom into smaller groups.
Answer:
All plants present in the plant kingdom are separated by into smaller groups.The smaller groups contains plant species which are more similar to one another.
Some of the characteristics through which plant species can be separated are:
Gymnosperm or angiosperms: Pine are gymnosperm plants whereas strawberry plants are angiosperms. Cactus is also a gymnosperm.
Their location: Plants can be separated based on their habitats. For example, Cactus are desert- plants whereas pine and strawberries are not desert plants.
They are seed- producing plants or spore producing plants: pine are spore producing plants. Strawberry are seed-producing plants.
Pine trees, strawberry plants, and cacti can be separated based on leaf structure, growth habit, and reproduction.
Scientists could use several characteristics to separate pine trees, strawberry plants, and cacti into smaller groups. Three possible characteristics include:
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