The ionic charges switch (oxygen has a -2)
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2. is already balanced
3. 2k + Br2. KBr
4. SiO2 + 4HF. SiF4 + 2H2O
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(2·2)Fe → 4Fe
(2·3)O → 6O
3C → 3C
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here iron is having an oxidation state of +3 called as cation and oxide is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral .
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
1. A 2. C 3. A 4. B 5. D
1. C Vegetation
2. D Geiger Counter
3. A True
4. B False
1. Rock color, Radioactivity and magnetism are important characteristics to determine the kind of mineralization and if it is economically viable.
2. Geiger Counter is a device that is used to detects alpha, beta or gamma rays through ionization of the radiation
3. 2H2 + O2 = 2H2O + Energy
4. Carbon-12 is an isotope of carbon, carbon-13 and carbon-14 are also the isotopes of carbon
4Fe + 3O2 --> 2Fe2O3
HAPP TURKEY BREAK
tracks, burrows, eggshells, nests, tooth marks, or gastroliths