The difference between silver and gold in atom and element is the number of protons, neutrons and electrons.
Answer:
0.54g of Cr
Explanation:
Current (I) = 10A
Time (t) = 100s
Molecular mass of Cr = 51.996 amu
Faraday's first law of electrolysis states that
The mass of the substance (m) of a given substance deposited at an electrode is directly proportional to the quantity of electricity or charge (Q) passed
m = nQ
M = mass of the substance
n = electrochemical constant
Q = charge passed through it
Q = IT
Q = (10 * 100) = 1000C
1 moles = molarmass = Faraday's constant (96500C)
Molar mass = Faraday's constant (96500C)
51.996 g = 96500C
How many grams will be liberated with 1000C
51.996g = 96500C
Xg = 1000C
X = (1000 * 51.996) / 96500
X = 51996 / 96500
X = 0.5388g = 0.54 g of Cr will be deposited
The chemical formula of the compound produced from the reaction of the anion (a negatively charged ion) with formula of A⁻ᵃ and a cation (a positively charged ion) with formula B⁺ˣ can be written as,
BₐAₓ
The answers to the questions above:
Row 2, Column 2: Na⁺ and NO⁻³ : Na₃NO
Row 2, Column 3: Ca²⁺ and NO⁻³ : Ca₃(NO)₂
Row 2, Column 4: Fe³⁺ and NO⁻³ : Fe₃(NO)₃
This can be furthered reduced to: FeNO
Row 2, Column 5: NH⁴⁺ and NO⁻³ : (NH)₃(NO)₄
Row 2, Column 6: Sn⁴⁺ and NO⁻³ : Sn₃(NO)₄
For the third row anion, S₂⁻
Row 3, Column 2: Na⁺ and S₂⁻ : NaS₂
Row 3, Column 3: Ca²⁺ and S₂⁻ : CaS₄
Row 3, Column 4: Fe³⁺ and Si₂⁻ : FeS₆
Row 3, Column 5: NH⁴⁺ and S₂⁻ : NHS₈
Row 3, Column 6: Sn⁴⁺ and S₂⁻ : SnS₈
For Row 4 anion, PO₃⁻⁴
Row 4, Column 2: Na⁺ and PO₃⁻⁴: <em>Na₄PO₃</em>
Row 4, Column 3: Ca²⁺ and PO₃⁻⁴ : <em>Ca₄(PO₃)₂</em>
Row 4, Column 4: Fe³⁺ and PO₃⁻⁴ : <em>Fe₄(PO₃)₃</em>
Row 4, Column 5: NH⁺⁴ and PO₃⁻⁴ : (NH)₄(PO₃)₄
This can be further simplified into <em>NHPO₃</em>
Row 4, Column 6: Sn⁴⁺ and PO₃⁻⁴ : Sn₄(PO₃)₄
This can be further simplified into <em>SnPO₃</em>
For Row 5 anion, CO₂⁻³
Row 5, Column 2: Na⁺ and CO₂⁻³ : Na₃CO₂
Row 5, Column 3: Ca²⁺ and CO₂⁻³ : Ca₃(CO₂)₂
Row 5, Column 4: Fe³⁺ and CO₂⁻³ : Fe₃(CO₂)₃
this can be further simplified into <em>FeCO₂</em>
Row 5, Column 5: NH⁴⁺ and CO₂⁻³ : (NH)₃(CO₂)₄
Row 5, Column 6: Sn⁴⁺ and CO₂⁻³ : Sn₃(CO₂)₄
Answer:
Due to the revolution of earth around the sun.
Explanation:
Since the earth is tilted at 23.5°, therefore at some point during revolution the southern hemisphere is closer to the sun and experiences summer while northern hemisphere experiences winter. At some other point the southern hemisphere is away from the sun and experiences winter while the northern hemisphere experiences summer.
HOPE IT HELPS...
3ZnCl2 + 2Al → 2AlCl3 + 3Zn