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With ionic bonding, two ions of the opposite charge are attracted to each other to form the bond. With ionic bonding, it is the strong electrostatic force of attraction between ions. While, covalent bondi...
For the technique of chromatography, there are two 'phases', the stationary phase and the mobile phase. In paper chromatography, the stationary phase is the paper and the mobile phase is...
2,8,6
2x^2+6x-8=0fx^2+3x-4=0(x-1)(x+4)=0x=-4 or x=1
Assume that Tom's age now is x and that his dad's is 3x. Therefore, in 15 years Tom will be x+15 years old and his dad will be 3x+15 years old. Since the sum of their ages will be equal to 102, we can f...
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