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This is because when the metals are heated (burned), their electrons can briefly 'jump' from lower energy electron shells to higher energy electron shells. This requires energy to happen, and light is not...
First you must calculate the moles of Mg that originally reacted. moles = mass/Mr moles=48/24 moles= 2 Molar ratio of Mg to MgCl2 is 1:1 Therefore 2 moles of MgCl2 were produced moles= mass/Mr mass= moles...
First we need to calculate the total mass of a CO2 molecule. This is done by summing up the individual masses of all the atoms. To find these, we look at the periodic table and see that the mas...
Ionic compounds are formed when electrostatic attractions form between oppositely charged ions. These attractions are strong and so require a large amount of energy to break. This energy is provided in th...
First let us look at what the specification asks of you as a student:E.g. AQA GCSE chemistry specification 4.3.2.3 Using moles to balance equations (HT only) The balancing numbers ...
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